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 A274623 #7 Jul 05 2016 15:57:19 %S A274623 1,2,1,4,2,8,4,14,8,24,1,14,40,2,24,64,4,40,100,8,64,154,14,100,232, %T A274623 24,154,344,1,40,232,504,2,64,344,728,4,100,504,1040 %N A274623 Left half of triangular array in A274622. %C A274623 See A274622, which is the main entry for this array, for further information. %e A274623 Triangle begins: %e A274623 1, %e A274623 2, %e A274623 1,4, %e A274623 2,8, %e A274623 4,14, %e A274623 8,24, %e A274623 1,14,40, %e A274623 2,24,64, %e A274623 4,40,100, %e A274623 8,64,154, %e A274623 14,100,232, %e A274623 24,154,344, %e A274623 1,40,232,504, %e A274623 2,64,344,728, %e A274623 4,100,504,1040, %e A274623 ... %Y A274623 Cf. A274622, A274624, A274625. %K A274623 nonn,tabf,more %O A274623 0,2 %A A274623 _N. J. A. Sloane_, Jul 04 2016