Math::NumSeq::HarshadNumbers -- numbers divisible by sum of digits
use Math::NumSeq::HarshadNumbers; my $seq = Math::NumSeq::HarshadNumbers->new; my ($i, $value) = $seq->next;
The harshad numbers 1 to 10, then 12, 18, 20, 21, etc, being integers which are divisible by the sum of their digits. For example 18 is a harshad number because 18 is divisible by its digit sum 1+8=9.
See "FUNCTIONS" in Math::NumSeq for behaviour common to all sequence classes.
$seq = Math::NumSeq::HarshadNumbers->new ()
$seq = Math::NumSeq::HarshadNumbers->new (radix => $r)
Create and return a new sequence object.
radixparameter (default 10, decimal) sets the base to use for the digits.
$bool = $seq->pred($value)
Return true if
$valueis a harshad number, ie. is divisible by the sum of its digits (in the given
Copyright 2011, 2012, 2013 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.
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