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 A151737 #4 Sep 26 2015 01:12:27 %S A151737 1,2,1,5,1,5,5,11,1,5,5,11,7,15,19,23,1,5,5,11,7,15,19,23,7,15,21,29, %T A151737 29,49,59,47,1,5,5,11,7,15,19,23,7,15,21,29,29,49,59,47,7,15,21,29,29, %U A151737 49,61,53,29,51,71,87,107,157,163,95,1,5,5,11,7,15,19,23,7,15,21,29,29,49,59,47 %N A151737 First differences of A151735 (starting at A151735(2)). %e A151737 If written as a triangle, %e A151737 1, %e A151737 2, %e A151737 1,5, %e A151737 1,5,5,11, %e A151737 1,5,5,11,7,15,19,23, %e A151737 1,5,5,11,7,15,19,23,7,15,21,29,29,49,59,47, %e A151737 1,5,5,11,7,15,19,23,7,15,21,29,29,49,59,... %e A151737 the rows approach A151728. %Y A151737 Cf. A151735, A151728. %K A151737 nonn,tabf %O A151737 0,2 %A A151737 _N. J. A. Sloane_, Jun 15 2009, Jun 16 2009