1Math::NumSeq::Perrin(3)User Contributed Perl DocumentatioMnath::NumSeq::Perrin(3)
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NAME

6       Math::NumSeq::Perrin -- Perrin sequence
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SYNOPSIS

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

14       The Perrin sequence,
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16           3, 0, 2, 3, 2, 5, 5, 7, 10, 12, 17, 22, 29, 39, 51, etc
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18       which is the recurrence
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20           P(i) = P(i-2) + P(i-3)
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22       starting from 3,0,2.  So for example 29 is 12+17.
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24           12, 17, 22, 29
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26            |   |       ^
27            |   |       |
28            +---+---add-+
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FUNCTIONS

31       See "FUNCTIONS" in Math::NumSeq for behaviour common to all sequence
32       classes.
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34       "$seq = Math::NumSeq::Perrin->new (length => $integer)"
35           Create and return a new sequence object.
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37   Random Access
38       "$value = $seq->ith($i)"
39           Return the $i'th value from the sequence.
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41       "$i = $seq->value_to_i_estimate($value)"
42           Return an estimate of the i corresponding to $value.
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SEE ALSO

45       Math::NumSeq, Math::NumSeq::Fibonacci
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HOME PAGE

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

51       Copyright 2010, 2011, 2012, 2013, 2014 Kevin Ryde
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53       Math-NumSeq is free software; you can redistribute it and/or modify it
54       under the terms of the GNU General Public License as published by the
55       Free Software Foundation; either version 3, or (at your option) any
56       later version.
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58       Math-NumSeq is distributed in the hope that it will be useful, but
59       WITHOUT ANY WARRANTY; without even the implied warranty of
60       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
61       General Public License for more details.
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63       You should have received a copy of the GNU General Public License along
64       with Math-NumSeq.  If not, see <http://www.gnu.org/licenses/>.
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68perl v5.28.1                      2014-06-29           Math::NumSeq::Perrin(3)