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 A115609 #2 Mar 30 2012 17:22:41
%S A115609 0,11,318,10257,389606,17636879,909031090
%N A115609 Number of 4-tuples of primes in arithmetic progression less than 10^n.
%D A115609 See A113827
%e A115609 The least 4-tuple is {5,11,17,23}.
%Y A115609 Cf. A113827 (prime beginning minimal n-tuple of primes in AP), A115608-A115613.
%K A115609 nonn
%O A115609 1,2
%A A115609 _T. D. Noe_, Jan 25 2006