0,2

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

g.f.: -(1-7*x+18*x^2-20*x^3+8*x^4)/(-1+9*x-28*x^2+38*x^3-20*x^4+x^5)

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

Sequence in context: A000163 A117616 A014445 this_sequence A034999 A067336 A151829

Adjacent sequences: A113437 A113438 A113439 this_sequence A113441 A113442 A113443

nonn

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