1Math::NumSeq::Perrin(3)User Contributed Perl DocumentatioMnath::NumSeq::Perrin(3)
2
3
4

NAME

6       Math::NumSeq::Perrin -- Perrin sequence
7

SYNOPSIS

9        use Math::NumSeq::Perrin;
10        my $seq = Math::NumSeq::Perrin->new;
11        my ($i, $value) = $seq->next;
12

DESCRIPTION

14       The Perrin sequence,
15
16           3, 0, 2, 3, 2, 5, 5, 7, 10, 12, 17, 22, 29, 39, 51, etc
17
18       which is the recurrence
19
20           P(i) = P(i-2) + P(i-3)
21
22       starting from 3,0,2.  So for example 29 is 12+17.
23
24           12, 17, 22, 29
25
26            |   |       ^
27            |   |       |
28            +---+---add-+
29

FUNCTIONS

31       See "FUNCTIONS" in Math::NumSeq for behaviour common to all sequence
32       classes.
33
34       "$seq = Math::NumSeq::Perrin->new (length => $integer)"
35           Create and return a new sequence object.
36
37   Random Access
38       "$value = $seq->ith($i)"
39           Return the $i'th value from the sequence.
40
41       "$i = $seq->value_to_i_estimate($value)"
42           Return an estimate of the i corresponding to $value.
43

SEE ALSO

45       Math::NumSeq, Math::NumSeq::Fibonacci
46

HOME PAGE

48       <http://user42.tuxfamily.org/math-numseq/index.html>
49

LICENSE

51       Copyright 2010, 2011, 2012, 2013, 2014 Kevin Ryde
52
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.
57
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.
62
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/>.
65
66
67
68perl v5.28.1                      2014-06-29           Math::NumSeq::Perrin(3)
Impressum