0,2

a(n)= 1+6*n+20*n^2+48*n^3+90*n^4+132*n^5+132*n^6. Seventh row polynomial (n=6) of Catalan triangle A009766.

G.f.:(1+422*x+11607*x^2+43940*x^3+34063*x^4+4950*x^5+57*x^6)/(1-x)^7.

A064304 (eighth diagonal).

Sequence in context: A090200 A033279 A145056 this_sequence A147694 A166537 A165058

Adjacent sequences: A064301 A064302 A064303 this_sequence A064305 A064306 A064307

nonn,easy

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