1Math::NumSeq::ReverseAdUds(e3r)Contributed Perl DocumentMaattiho:n:NumSeq::ReverseAdd(3)
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NAME

6       Math::NumSeq::ReverseAdd -- steps of the reverse-add algorithm
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SYNOPSIS

9        use Math::NumSeq::ReverseAdd;
10        my $seq = Math::NumSeq::ReverseAdd->new (start => 196);
11        my ($i, $value) = $seq->next;
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DESCRIPTION

14       The reverse-add sequence from a given starting point.  The digit
15       reversal of a given value is added to make the next.  For example
16       "start => 1",
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18           1,2,4,8,16,77,154,605,1111,2222,...
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20       At 16 the reversal is 61, adding those 16+61=77 is the next value.
21       There's some interest in whether a palindrome like 77 is ever reached
22       in the sequence, but the sequence here continues on forever.
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24       The default is digits reversed in decimal, but the "radix" parameter
25       can select another base.
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FUNCTIONS

28       See "FUNCTIONS" in Math::NumSeq for behaviour common to all sequence
29       classes.
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31       "$seq = Math::NumSeq::ReverseAdd->new (start => $n)"
32       "$seq = Math::NumSeq::ReverseAdd->new (start => $n, radix => $r)"
33           Create and return a new sequence object.
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35   Random Access
36       "$value = $seq->ith($i)"
37           Return the $ith value in the sequence.
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SEE ALSO

40       Math::NumSeq, Math::NumSeq::ReverseAddSteps
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HOME PAGE

43       <http://user42.tuxfamily.org/math-numseq/index.html>
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LICENSE

46       Copyright 2011, 2012, 2013, 2014, 2016, 2019 Kevin Ryde
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48       Math-NumSeq is free software; you can redistribute it and/or modify it
49       under the terms of the GNU General Public License as published by the
50       Free Software Foundation; either version 3, or (at your option) any
51       later version.
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53       Math-NumSeq is distributed in the hope that it will be useful, but
54       WITHOUT ANY WARRANTY; without even the implied warranty of
55       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
56       General Public License for more details.
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58       You should have received a copy of the GNU General Public License along
59       with Math-NumSeq.  If not, see <http://www.gnu.org/licenses/>.
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63perl v5.32.1                      2021-01-27       Math::NumSeq::ReverseAdd(3)
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