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 A186228 #5 Mar 30 2012 18:57:18 %S A186228 2,5,8,11,15,18,21,24,27,31,34,37,40,44,47,50,53,57,60,63,66,70,73,76, %T A186228 79,82,86,89,92,95,99,102,105,108,112,115,118,121,125,128,131,134,137, %U A186228 141,144,147,150,154,157,160,163,167,170,173,176,180,183,186,189,192,196,199,202,205,209,212,215,218,222,225,228,231,235,238,241,244,248,251,254,257,260,264,267,270,273,277,280,283,286,290,293,296,299,303,306,309 %N A186228 Adjusted joint rank sequence of (f(i)) and (g(j)) with f(i) before g(j) when f(i)=g(j), where f and g are the triangular numbers and heptagonal numbers. Complement of A186227. %C A186228 See A186227. %e A186228 See A186227. %t A186228 (See A186227.) %Y A186228 Cf. A186219, A186227, A186237, A186238. %K A186228 nonn %O A186228 1,1 %A A186228 _Clark Kimberling_, Feb 16 2011