0,3

Recurrence in A052947.

O.g.f.: 1/2+1/2*(-2*x-5*x^2+1)/(-1+x^2+2*x^3). a(n) = A052947(n-1) + 2*A052947(n-2) - A052947(n-3) . - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 01 2008

Cf. A078050.

Sequence in context: A049797 A116578 A078050 this_sequence A094403 A129760 A057377

Adjacent sequences: A134268 A134269 A134270 this_sequence A134272 A134273 A134274

nonn

Paul Curtz (bpcrtz(AT)free.fr), Jan 30 2008