1,3

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

a(n) = A168339(n) - 2*(A161357(n)+A161358(n)) - 4.

Cf. A168339, A161369.

Sequence in context: A111611 A100478 A112376 * A224212 A078490 A282847

Adjacent sequences: A161356 A161357 A161358 * A161360 A161361 A161362

nonn

R. H. Hardin and N. J. A. Sloane, Nov 27 2009

More terms (variables cost-2*(dimm+dimn)-4 of the C program in A168339) added by R. J. Mathar, Mar 06 2010

approved