0,2

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

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

Cf. a(n)=A113435(3n+1).

Sequence in context: A032952 A001835 A079935 this_sequence A076540 A129637 A084077

Adjacent sequences: A113434 A113435 A113436 this_sequence A113438 A113439 A113440

nonn

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