0,2

a(n) = 9a(n-1)-28a(n-2)+38a(n-3)-20a(n-4)+a(n-5)

g.f.: -(1-4*x+6*x^2-4*x^3+x^4)/(-1+9*x-28*x^2+38*x^3-20*x^4+x^5)

Cf. a(n)=A113439(4n+3).

Adjacent sequences: A113440 A113441 A113442 this_sequence A113444 A113445 A113446

Sequence in context: A073682 A034958 A085350 this_sequence A124999 A120902 A054441

nonn

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