1,2

Table of n, a(n) for n=1..57.

Index entries for linear recurrences with constant coefficients, signature (1,0,0,0,1,-1).

G.f.: x^2*(2 + 2*x + x^2 + x^3 + x^4) / ( (x^4 + x^3 + x^2 + x + 1)*(x-1)^2 ). - R. J. Mathar, Dec 03 2011

Sequence in context: A286045 A127032 A255165 * A099593 A184867 A029903

Adjacent sequences: A047313 A047314 A047315 * A047317 A047318 A047319

nonn

N. J. A. Sloane

approved