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 A244952 #21 Jul 13 2014 17:08:28 %S A244952 0,1,3,4,7,9,12,16,17,27,30,33,36,45,54,57,60,81,120,135,171,210,225, %T A244952 267,366,378,390,432,435,564,654,675,741,825,858,894 %N A244952 Records in A245203 (= least k>=0 such that 4n+3 is the mean of primes 4(n-k)+3 and 4(n+k)+3). %C A244952 The indices of these records (i.e. n=n(k) such that A245203(n)=a(k)) are given in A245205. %K A244952 nonn,more %O A244952 1,3 %A A244952 _M. F. Hasler_, Jul 13 2014