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 A242881 #10 May 27 2014 00:35:41 %S A242881 3,4,10,12,14,15,23,32,33,37,39,50,58,60,64,66,82,86,90,91,93,111,112, %T A242881 114,128,139,143,155,157,158,162,167,171,179,190,197,198,199,207,223, %U A242881 226,231,241,248,255,262,270,280,282,286,293,306,313,317,318,325,327 %N A242881 Positions of lesser of twin primes in A001359 with index 2. %C A242881 For the definition of the index of a twin primes pair, see the comment in A242767. %H A242881 Peter J. C. Moses, <a href="/A242881/b242881.txt">Table of n, a(n) for n = 1..5000</a> %Y A242881 Cf. A001359, A242758, A242767, A242768, A242807. %K A242881 nonn %O A242881 1,1 %A A242881 _Vladimir Shevelev_, May 25 2014 %E A242881 More terms from _Peter J. C. Moses_, May 25 2014