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 A167749 #2 Mar 30 2012 18:59:26 %S A167749 1,0,1,0,1,1,0,1,2,1,0,2,3,3,1,0,3,6,6,4,1,0,5,11,13,10,5,1,0,9,20,27, %T A167749 24,15,6,1,0,15,38,54,55,40,21,7,1,0,26,70,109,120,100,62,28,8,1,0,45, %U A167749 129,216,258,236,168,91,36,9,1,0,78,238,423,544,540,426,266,128,45,10,1 %N A167749 Riordan array (1,xf(x)) where f(x) is the g.f. of A005169 (fountains of coins). %C A167749 Row sums are A167750. Diagonal sums are A167751. %F A167749 G.f.: 1/(1-xy/(1-x/(1-x^2/(1-x^3/(1-x^4/(1-... (continued fraction). %e A167749 Triangle begins %e A167749 1, %e A167749 0, 1, %e A167749 0, 1, 1, %e A167749 0, 1, 2, 1, %e A167749 0, 2, 3, 3, 1, %e A167749 0, 3, 6, 6, 4, 1, %e A167749 0, 5, 11, 13, 10, 5, 1, %e A167749 0, 9, 20, 27, 24, 15, 6, 1, %e A167749 0, 15, 38, 54, 55, 40, 21, 7, 1, %e A167749 0, 26, 70, 109, 120, 100, 62, 28, 8, 1, %e A167749 0, 45, 129, 216, 258, 236, 168, 91, 36, 9, 1, %e A167749 0, 78, 238, 423, 544, 540, 426, 266, 128, 45, 10, 1, %e A167749 0, 135, 437, 824, 1127, 1205, 1035, 721, 402, 174, 55, 11, 1 %K A167749 easy,nonn,tabl %O A167749 0,9 %A A167749 _Paul Barry_, Nov 10 2009