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 A274625 #9 Jul 05 2016 16:09:54 %S A274625 1,1,2,2,4,4,8,1,8,14,2,14,24,4,24,40,8,40,64,14,64,100,1,24,100,154, %T A274625 2,40,154,232,4,64,232,344,8,100,344,504,14,154,504,728,24,232,728, %U A274625 1040 %N A274625 Right half plus central column of triangular array in A274624. %C A274625 See A274624, which is the main entry for this array, for further information. %e A274625 Triangle begins: %e A274625 1, %e A274625 1,2, %e A274625 2,4, %e A274625 4,8, %e A274625 1,8,14, %e A274625 2,14,24, %e A274625 4,24,40, %e A274625 8,40,64, %e A274625 14,64,100, %e A274625 1,24,100,154, %e A274625 2,40,154,232, %e A274625 4,64,232,344, %e A274625 8,100,344,504, %e A274625 14,154,504,728, %e A274625 24,232,728,1040, %e A274625 ... %Y A274625 Cf. A274622, A274623, A274624. %K A274625 nonn,tabf,more %O A274625 0,3 %A A274625 _N. J. A. Sloane_, Jul 05 2016