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 A256966 #9 Apr 16 2015 20:57:20 %S A256966 1,3,6,9,13,17,21,26,31,36,41,46,52,58,64,70,76,82,88,94,101,108,115, %T A256966 122,129,136,143,150,157,164,171,178,185,193,201,209,217,225,233,241, %U A256966 249,257,265,273,281,289,297,305,313,321,329,337 %N A256966 Partial sums of A072649. %H A256966 Popular Computing (Calabasas, CA), <a href="/A256967/a256967.png">A Coding Exercise (from a suggestion by R. W. Hamming)</a>, Vol. 5 (No. 54, Sep 1977), p. PC55-18. %Y A256966 Cf. A072649, A256967. %K A256966 nonn %O A256966 1,2 %A A256966 _N. J. A. Sloane_, Apr 16 2015