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 A211240 #7 May 01 2013 20:51:50 %S A211240 1761702947,11085833111,177558051107,473787509537,557149355507, %T A211240 715464238661,2236159108277,2751203698151,3247566894821,3288002848511, %U A211240 3424305123047,3490420408691,3729352769561,3801308473871,4296903559301,4656625081181,4837112125121,5125165470701 %N A211240 Prime numbers p such that x^2 + x + p produces primes for x = 0..11 but not x = 12. %C A211240 The first term is A164926(12). %Y A211240 Cf. A067774, A164926. %K A211240 nonn %O A211240 1,1 %A A211240 _T. D. Noe_, Apr 10 2012 %E A211240 a(7)-a(18) from _Donovan Johnson_, Apr 16 2012