0,2

a(n) = 7a(n-1)-5a(n-2)+11a(n-3)-a(n-4)

g.f.: (1-5*x+8*x^2-4*x^3)/(1-7*x+15*x^2-11*x^3+x^4)

Cf. a(n)=A113435(3n).

Sequence in context: A055988 A087096 A001075 this_sequence A126223 A114121 A049775

Adjacent sequences: A113433 A113434 A113435 this_sequence A113437 A113438 A113439

nonn

Floor van Lamoen (fvlamoen(AT)hotmail.com), Nov 04 2005