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 A101085 #5 Jul 26 2017 00:44:48 %S A101085 2,2,5,4,8,6,11,8,24,10,17,12,20,14,135,16,26,18,29,20,252,22,35,24, %T A101085 90,26,153,28,44,30,47,32,594,34,665,36,56,38,819,40,62,42,65,44,1080, %U A101085 46,71,48,224,50,1377,52,80,54,1595,56,1710,58,89,60,92,62,2079,64,2210,66 %N A101085 Diagonal below the main diagonal of A083796, i.e., a(n) = A083796(n, n-1). %C A101085 a(n) is the least k such that 1) n divides k + (n-1)(n-2)/2; 2) k > n-2; 3) A048671(n-1) divides k. %Y A101085 Cf. A048671, A083796, A083797. %K A101085 easy,nonn,less %O A101085 2,1 %A A101085 _David Wasserman_, Nov 30 2004