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 A059879 #3 May 01 2014 02:46:12 %S A059879 1,2,3,4,5,6,7,9,10,14,16,18,20,21,24,27,31,34,37,39,41,43,46,47,48, %T A059879 50,51,53,54,55,57,60,61,65,67,68,71,78,83,84,86,87,101,103,105,106, %U A059879 109,112,114,117,126,127,128,129,141,143,145,154,155,158,161,168,179,181 %N A059879 Those n for which the absolute value of A059878[n] is prime. %C A059879 Of the first 511 terms of A059878, 128 are primes. %p A059879 positions(true,map(isprime,map(abs, A059878))); # positions function given in A059649. %Y A059879 Cf. A059877. %K A059879 nonn %O A059879 1,2 %A A059879 _Antti Karttunen_, Feb 05 2001