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 A157191 #3 Jul 14 2012 11:32:24 %S A157191 1,2,17,20,190,357,959,4479,10522,16447,21383,22993,37977,53972, %T A157191 129076,205244,440069,745584,830983,918422,1073653,2309722,2731757, %U A157191 3833005,4788328,5025102,5411333 %N A157191 Indices of records in A157190: prime(a(n)) can be written in more ways as pq-p-q (p,q, prime) than any smaller prime. %F A157191 A157191 = A000720 o A157190 ; A157190 = A000040 o A157191. %K A157191 nonn %O A157191 1,2 %A A157191 _M. F. Hasler_, Mar 16 2009