2,1

R. H. Hardin, Table of n, a(n) for n=2..100

Empirical: n^2*(n^2-1)*(n^2+2)*(n^4-11*n^2+48)/120. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 11 2009]

Sequence in context: A066230 A048667 A115865 this_sequence A119864 A036240 A133242

Adjacent sequences: A159356 A159357 A159358 this_sequence A159360 A159361 A159362

nonn

Ron Hardin (rhhardin(AT)att.net) Apr 11 2009