0,2

Convolution of A089513 with powers of 120.

G.f.: 1/((1-3*2*1*x)*(1-4*3*2*x)*(1-5*4*3*x)*(1-6*5*4*x)).

a(n) = A089504(n+4, 4), n>=0.

a(n) = (1350*(6*5*4)^n - 950*(5*4*3)^n + 114*(4*3*2)^n - (3*2*1)^n)/513.

Cf. A089505, A089513.

Sequence in context: A035840 A140904 A092711 this_sequence A014979 A134236 A136350

Adjacent sequences: A089511 A089512 A089513 this_sequence A089515 A089516 A089517

nonn,easy

Wolfdieter Lang (wolfdieter.lang_AT_physik_DOT_uni-karlsruhe_DOT_de), Dec 01 2003