A140420 Binomial transform of 0, 1, 1, 7, 7, 31, 31, ..., zero followed by duplicated A083420.
0, 1, 3, 13, 45, 151, 483, 1513, 4665, 14251, 43263, 130813, 394485, 1187551, 3570843, 10728913, 32219505, 96724051, 290303223, 871171813, 2614039725, 7843167751, 23531600403, 70598995513, 211805375145, 635432902651
Offset: 0
Keywords
Links
- Index entries for linear recurrences with constant coefficients, signature (5, -5, -5, 6).
Formula
a(n+1)-3a(n) = A099430(n).
O.g.f.: (3x^2-2x+1)x/((2x-1)(1+x)(3x-1)(1-x)). - R. J. Mathar, Jul 10 2008
a(n)+a(n+1)=A126644(n). - R. J. Mathar, Jul 10 2008
Extensions
More terms from R. J. Mathar, Jul 10 2008