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 A193852 #5 Mar 30 2012 18:57:38 %S A193852 1,2,4,4,10,13,8,24,36,40,16,56,96,116,121,32,128,248,328,358,364,64, %T A193852 288,624,904,1044,1086,1093,128,640,1536,2432,2992,3216,3272,3280,256, %U A193852 1408,3712,6400,8416,9424,9760,9832,9841,512,3072,8832,16512,23232 %N A193852 Triangular array: (1/2)*A193850. %t A193852 (See A193850.) %Y A193852 Cf. A193850. %K A193852 nonn,tabl %O A193852 0,2 %A A193852 _Clark Kimberling_, Aug 07 2011