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 A213075 #15 May 24 2016 05:46:20 %S A213075 2,3,7,10,17,24,36,49,70,93 %N A213075 Second diagonal of A213074. %H A213075 N. Metropolis and P. R. Stein, <a href="http://dx.doi.org/10.1016/S0021-9800(70)80091-6">An elementary solution to a problem in restricted partitions</a>, J. Combin. Theory, 9 (1970), 365-376. %Y A213075 Cf. A213074. %K A213075 nonn,more %O A213075 4,1 %A A213075 _N. J. A. Sloane_, Jun 04 2012 %E A213075 a(12)-a(13) from _Alois P. Heinz_, Jul 11 2012