1,1

Table of n, a(n) for n=1..72.

19 can be expressed as 55^5 - 22434^2, so 19 is not in the sequence.

Cf. A152412, A177760, A177761, A177764, A177765, A177859.

Sequence in context: A049533 A052419 A257458 * A047421 A004777 A059561

Adjacent sequences: A179436 A179437 A179438 * A179440 A179441 A179442

nonn

Artur Jasinski, Jul 14 2010

Edited by Arkadiusz Wesolowski, Jan 05 2013

approved