#!/usr/bin/perl -w
# Copyright 2012, 2013 Kevin Ryde
# This file is part of Math-NumSeq.
#
# Math-NumSeq is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 3, or (at your option) any later
# version.
#
# Math-NumSeq is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# for more details.
#
# You should have received a copy of the GNU General Public License along
# with Math-NumSeq. If not, see <http://www.gnu.org/licenses/>.
use 5.004;
use strict;
use Test;
plan tests => 4;
use lib 't','xt';
use MyTestHelpers;
MyTestHelpers::nowarnings();
use MyOEIS;
use Math::NumSeq::Squares;
#------------------------------------------------------------------------------
# A005214 - union triangulars and squares, starting from 1
MyOEIS::compare_values
(anum => 'A005214',
func => sub {
my ($count) = @_;
require Math::NumSeq::Triangular;
my $squares = Math::NumSeq::Squares->new;
my $triangular = Math::NumSeq::Triangular->new;
my @got;
for (my $i = 1; @got < $count; $i++) {
if ($squares->pred($i) || $triangular->pred($i)) {
push @got, $i;
}
}
return \@got;
});
#------------------------------------------------------------------------------
# A000037 - non-squares
MyOEIS::compare_values
(anum => 'A000037',
func => sub {
my ($count) = @_;
my $seq = Math::NumSeq::Squares->new;
my @got;
for (my $i = 0; @got < $count; $i++) {
if (! $seq->pred($i)) {
push @got, $i;
}
}
return \@got;
});
#------------------------------------------------------------------------------
# A010052 - characteristic 1/0 of squares
MyOEIS::compare_values
(anum => 'A010052',
func => sub {
my ($count) = @_;
my $seq = Math::NumSeq::Squares->new;
my @got;
for (my $i = 0; @got < $count; $i++) {
push @got, $seq->pred($i) ? 1 : 0;
}
return \@got;
});
#------------------------------------------------------------------------------
# A001105 - 2*n^2
MyOEIS::compare_values
(anum => 'A001105',
func => sub {
my ($count) = @_;
my $seq = Math::NumSeq::Squares->new;
my @got;
while (@got < $count) {
my ($i, $value) = $seq->next;
push @got, 2*$value;
}
return \@got;
});
#------------------------------------------------------------------------------
exit 0;