0,3

a(n) = 3 a(n-1) + 11 a(n-2).

O.g.f.: -x/(-1+3*x+11*x^2). a(n)=-22^n*(A^n-B^n)/sqrt(53) where A=-1/(3+sqrt(53)) and B=1/(sqrt(53)-3) . - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 29 2008

Sequence in context: A006411 A129549 A092786 this_sequence A000948 A074831 A000917

Adjacent sequences: A015526 A015527 A015528 this_sequence A015530 A015531 A015532

nonn,easy

Olivier Gerard (ogerard(AT)ext.jussieu.fr)