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 A227961 #10 Aug 02 2013 04:36:37 %S A227961 2,3,2,4,8,2,2,5,22,8,24,2,2,2,2,6,52,22,150,8,24,24,72,2,2,2,2,2,2,2, %T A227961 2,7,114,52,740,22,150,150,1046,8,24,24,72,24,72,72,216,2,2,2,2,2,2,2, %U A227961 2,2,2,2,2,2,2,2,2,8,240,114,3282,52,740 %N A227961 Triangle T(n,k) read by rows: how often does k appear among the first A006116(n) entries of A198260? %C A227961 T(n,k) shows how often k appears among the first A006116(n) entries of A198260. %C A227961 n and k are counted from 1: %C A227961 2, %C A227961 3, 2, %C A227961 4, 8, 2, 2, %C A227961 5, 22, 8, 24, 2, 2, 2, 2, %C A227961 6, 52,22,150, 8, 24, 24, 72,2, 2, 2, 2, 2, 2, 2, 2, %C A227961 7,114,52,740,22,150,150,1046,8,24,24,72,24,72,72,216,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2 %C A227961 The number of different entries per row is 1,2,3,5,8,12,16... %C A227961 The second column 2,8,22,52,114,240... seems to appear in other columns as well. %C A227961 Row lengths are powers of two (A000079). %C A227961 Row sums are the sums of Gaussian binomial coefficients (A006116). %H A227961 Tilman Piesk, <a href="/A227961/b227961.txt">First 7 rows of triangle, flattened</a> %H A227961 Tilman Piesk, <a href="/A227961/a227961.txt">First 7 rows of triangle</a> %K A227961 nonn,tabf %O A227961 1,1 %A A227961 _Tilman Piesk_, Aug 01 2013