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 A058757 #3 Mar 30 2012 16:48:57 %S A058757 1,3,7,23,61,207,631,2111,6901,23183,77749,263807,896403,3063147, %T A058757 10493077,36060927,124198397,428708475,1482448439,5134798223, %U A058757 17811210781,61864011135,215127430973,748898387039,2609615501811,9101687173595 %N A058757 a(n) = n*coefficient of x^n in log(1+S), S = g.f. for A000084. %C A058757 Useful for computing A000669 and A000084. %p A058757 For Maple code see A000669, method 2. %Y A058757 Cf. A000084, A000669. %K A058757 nonn %O A058757 1,2 %A A058757 _N. J. A. Sloane_, Jan 01 2001