0,1

G.f.: (343+4460*x+3119*x^2+64*x^3)/(-1+x)^4. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 24 2009]

Sequence in context: A017247 A017355 A167727 this_sequence A017607 A134263 A140250

Adjacent sequences: A017472 A017473 A017474 this_sequence A017476 A017477 A017478

nonn,easy

N. J. A. Sloane (njas(AT)research.att.com).