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 A047664 #11 Mar 07 2020 02:41:16 %S A047664 7,56,287,1120,3591,9912,24319,54272,112071,216952,397727,696032, %T A047664 1170247,1900152,2992383,4586752,6863495,10051512,14437663,20377184, %U A047664 28305287,38750008,52346367,69851904,92163655,120336632,155603871 %N A047664 Row 7 of square array defined in A047662. %F A047664 a(n) = (n/315) * (4*n^6 + 14*n^5 + 112*n^4 + 245*n^3 + 616*n^2 + 686*n + 528). %K A047664 nonn %O A047664 1,1 %A A047664 _N. J. A. Sloane_