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 A113461 #10 Mar 30 2012 18:35:45 %S A113461 0,1,2,6,6,30,150,1210230,32671170,224494620,1536160080,1482708889200 %N A113461 Common differences of arithmetic progressions in A113460. %C A113461 Apart from the initial term, does this sequence coincide with A061558? Does A113460 coincide with A130791? - _N. J. A. Sloane_, Sep 22 2007 %C A113461 Apart from the initial term, this sequence coincides with A061558 for at least the first 210 terms. - _David W. Wilson_, Sep 22 2007 %H A113461 <a href="/index/Pri#primes_AP">Index entries for sequences related to primes in arithmetic progressions</a> %Y A113461 Cf. A113460, A113459, A127781. %K A113461 hard,nonn %O A113461 1,3 %A A113461 _David Wasserman_, Jan 08 2006