Many excellent designs for a new banner were submitted. We will use the best of them in rotation.
4,1
R. H. Hardin, Table of n, a(n) for n=4..500
Conjecture: G.f. -x^4*(-13-9*x-3*x^2+8*x^3) / ( 1-x-x^2-x^3+x^4 ). - R. J. Mathar, Nov 28 2011
Sequence in context: A164421 A164493 A164509 * A164445 A164418 A164409
Adjacent sequences: A164412 A164413 A164414 * A164416 A164417 A164418
nonn
R. H. Hardin Aug 14 2009
approved
