1,2

a(10n) = a(n). a(10^n) = 1. a(k) = k^2 if k^2 is a palindromic square. (Comment corrected by David Wasserman, Jan 21 2009)

Table of n, a(n) for n=1..37.

a(n) = A018796(A004086(n^2)). [From David Wasserman, Jan 21 2009]

a(8) = 4624 = 68^2 beginning with 46 the digit reversal of 64 = 8^2.

Sequence in context: A258660 A260305 A229338 * A299118 A276272 A331450

Adjacent sequences: A111440 A111441 A111442 * A111444 A111445 A111446

base,easy,less,nonn

Amarnath Murthy, Aug 03 2005

Corrected and extended by David Wasserman, Jan 21 2009

approved