0,2

a(n)= 1+4*n+9*n^2+14*n^3+14*n^4. Fifth row polynomial (n=4) of Catalan triangle A009766.

G.f.: (1+37*x+181*x^2+111*x^3+6*x^4)/(1-x)^5.

A064096 (fifth diagonal).

Sequence in context: A134386 A105919 A091082 this_sequence A114928 A127545 A027318

Adjacent sequences: A064299 A064300 A064301 this_sequence A064303 A064304 A064305

nonn,easy

Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de), Sep 13 2001