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 A157982 #4 Mar 30 2012 18:52:03 %S A157982 1,1,2,-1,0,6,1,0,-6,4,-19,0,120,-120,30,27 %N A157982 Triangle T(n,m) read by rows which contains the coefficients [x^m] of the polynomial generating the numerators of the column A140825(.,n). %C A157982 The first five polynomials describing the first five columns of A140825 are in A000012, A005408, A140811, A141530 and A157411. %D A157982 P Curtz Integration numerique des systemes differentiels a conditions initiales, C.C.S.A., Arcueil, 1969, p.36. %e A157982 1; %e A157982 1,2; # 2n+1 %e A157982 -1,0,6; # 6n^2-1 %e A157982 1,0,-6,4; # 4n^3-6n^2+1, A141530 %e A157982 -19,0,120,-120,30; # 30n^4-120n^3+120n^2-19, A157411 %Y A157982 Cf. A141417. %K A157982 tabl,sign %O A157982 0,3 %A A157982 _Paul Curtz_, Mar 10 2009