1,1

Table of n, a(n) for n=1..46.

R. Ondrejka, The Top Ten: a Catalogue of Primal Configurations.

a(10) = 419, 419 is a prime and 1, 4 and 9 are squares.

Cf. A066591.

Sequence in context: A165944 A100557 A066591 * A068493 A167535 A184328

Adjacent sequences: A061243 A061244 A061245 * A061247 A061248 A061249

base,nonn

Amarnath Murthy, Apr 23 2001

Corrected and extended by Jason Earls, May 17 2005

Edited by N. J. A. Sloane, Aug 29 2008 at the suggestion of R. J. Mathar

approved