0,3
Table of n, a(n) for n=0..67.
G. Nebe, E. M. Rains and N. J. A. Sloane, Self-Dual Codes and Invariant Theory, Springer, Berlin, 2006.
Index entries for Molien series
Index entries for linear recurrences with constant coefficients, signature (2,-1)
The even numbers >= 4, prefixed by 1, 1, 3.
G.f.: 1+x+3*x^2+(4-2*x)*x^3/(1-x)^2. a(n)=A004278(n), n<>1. [From R. J. Mathar, Dec 15 2008]
Sequence in context: A173472 A058992 A051755 * A215476 A204662 A135667
Adjacent sequences: A092532 A092533 A092534 * A092536 A092537 A092538
nonn,easy
N. J. A. Sloane, Apr 08 2004
approved