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 A215235 #6 Aug 30 2012 12:09:02 %S A215235 1,3,3,7,2,3,10,2,2,5,4,4,3,4,6,6,4,3,3,6,4,4,4,4,5,7,2,2,25,10,2,6,2, %T A215235 8,8,2,3,2,9,4,5,16,11,24,16,8,5,2,7,9,23,5,3,15,12,3,7,2,2,10,9,3,3, %U A215235 3,17,4,4,11,2,19,2,2,24,20,11,13,10,2,7,5,4 %N A215235 Least number k such that the sum of the 2n+1 consecutive primes starting with prime(k) is prime. %C A215235 The sums are in A070934. The initial primes are in A089793. %H A215235 T. D. Noe, <a href="/A215235/b215235.txt">Table of n, a(n) for n = 0..10000</a> %Y A215235 Cf. A070934, A089793. %K A215235 nonn %O A215235 0,2 %A A215235 _T. D. Noe_, Aug 29 2012