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*(1 + x + x^2 + x^3 + 2*x^4 + x^5) / ( (x^4 + x^3 + x^2 + x + 1)*(x-1)^2 ). - R. J. Mathar, Oct 25 2011

Sequence in context: A005458 A184899 A039034 * A121217 A255582 A254077

Adjacent sequences: A047299 A047300 A047301 * A047303 A047304 A047305

nonn

N. J. A. Sloane

approved