OFFSET
1,2
COMMENTS
Is this a permutation of the positive integers ?
Will every square show up in the absolute value of the first difference ?
LINKS
Paul Tek, Table of n, a(n) for n = 1..10000
Paul Tek, Perl program for this sequence
EXAMPLE
The first differences of 1, 2, 6, 15, 31,... are 1^2, 2^2, 3^2, 4^2, 5^2, 7^2, 6^2,...
PROG
(Perl) See Link section.
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul Tek, Oct 19 2013
STATUS
approved