This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A064056 #11 May 01 2014 02:44:22 %S A064056 3,19,68,185,426,875,1652,2922,4905,7887,12232,18395,26936,38535, %T A064056 54008,74324,100623,134235,176700,229789,295526,376211,474444,593150, %U A064056 735605,905463,1106784,1344063,1622260,1946831 %N A064056 Seventh column of quintinomial coefficients. %F A064056 a(n) = A035343(n+2, 6) = binomial(n+2, 2)*(n^4+24*n^3+221*n^2+954*n+1080)/(6!/2!), n >= 0. %F A064056 G.f.: (3-2*x-2*x^2+3*x^3-x^4)/(1-x)^7; numerator polynomial is N5(6, x) from the array A063422. %F A064056 a(n) = 3*C(n+2,2) + 10*C(n+2,3) + 10*C(n+2,4) + 5*C(n+2,5) + C(n+2,6) (see comment in A213887). - _Vladimir Shevelev_ and _Peter J. C. Moses_, Jun 22 2012 %Y A064056 Cf. A027659 (sixth column). %K A064056 nonn,easy %O A064056 0,1 %A A064056 _Wolfdieter Lang_, Aug 29 2001