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 A202187 #24 Jan 07 2014 01:29:52 %S A202187 1,9,18,42,165,317,559,634,2604,7421,9401,20760,86376,178008,3549196, %T A202187 3840921,5633768,16454380,28751054 %N A202187 Index of A190874 at record terms. %C A202187 Each term of A174641 corresponds with a term in A168425 such that if A174641(A202186(n) - 1) = A168425(m) then m of A168425 = n of a(n). Note that A202186(n) - 1 is the value of the index n of A174641. %C A202187 Same as A202188, but without repeats. %e A202187 With n = 4, a(4)=42, and A202186(4) = 8. So, A190874(42)=8. %e A202187 However, A174641(A202186(4)-1) = A174641(8-1) = A168425(a(4)) = A168425(42) = 509. %K A202187 nonn %O A202187 1,2 %A A202187 _John W. Nicholson_, Dec 14 2011 %E A202187 a(12)-a(19) added by _John W. Nicholson_, Jan 06 2014