NAME

Math::NumSeq::OEIS::Catalogue -- available A-numbers

SYNOPSIS

use Math::NumSeq::OEIS::Catalogue;
my $anum = Math::NumSeq::OEIS::Catalogue->anum_first;
my $anum_next = Math::NumSeq::OEIS::Catalogue->anum_after($anum);

DESCRIPTION

This module lists the A-numbers available for Math::NumSeq::OEIS. It includes those available from NumSeq module code and those available from files.

A-numbers are handled as strings like "A000032". Six digits is usual, though rumour has it the plan is for seven digits like "A1000000" when the millionth sequence is reached.

Add-on distributions can extend the catalogue by creating a plugin module. See Math::NumSeq::OEIS::Catalogue::Plugin for details.

FUNCTIONS

$anum = Math::NumSeq::OEIS::Catalogue->anum_first()

$anum = Math::NumSeq::OEIS::Catalogue->anum_last()

Return the first, or last, A-number available.

$anum = Math::NumSeq::OEIS::Catalogue->anum_before ($anum)

$anum = Math::NumSeq::OEIS::Catalogue->anum_after ($anum)

Return the A-number before, or after, a given $anum. Return undef if there's no more A-numbers in the respective direction.

SEE ALSO

Math::NumSeq::OEIS

HOME PAGE

http://user42.tuxfamily.org/math-numseq/index.html

LICENSE

Copyright 2010, 2011, 2012, 2013, 2014, 2016, 2019, 2020 Kevin Ryde

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/>.