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 A305474 #32 Oct 14 2019 04:28:23 %S A305474 0,1,-1728,1,3375,1,-8000,1,32768,1,-54000,1,-121287375,191025,1, %T A305474 -287496,1,884736,1,-681472000,-1264000,1,12771880859375,-5151296875, %U A305474 3491750,1,14670139392,-4834944,1,12288000,1,-16581375,1,1566028350940383,-58682638134 %N A305474 Coefficients of Hilbert class polynomial H_D(x) as D runs through the numbers -3, -4, -7, -8, -11, -12, ... . %H A305474 Seiichi Manyama, <a href="/A305474/b305474.txt">Rows n = 1..250, flattened</a> %e A305474 D | 0 1 2 3 %e A305474 ----+--------------------------------------------- %e A305474 -3 | 0, 1; %e A305474 -4 | -1728, 1; %e A305474 -7 | 3375, 1; %e A305474 -8 | -8000, 1; %e A305474 -11 | 32768, 1; %e A305474 -12 | -54000, 1; %e A305474 -15 | -121287375, 191025, 1; %e A305474 -16 | -287496, 1; %e A305474 -19 | 884736, 1; %e A305474 -20 | -681472000, -1264000, 1; %e A305474 -23 | 12771880859375, -5151296875, 3491750, 1; %e A305474 -24 | 14670139392, -4834944, 1; %e A305474 -27 | 12288000, 1; %e A305474 -28 | -16581375, 1; %e A305474 -31 | 1566028350940383, -58682638134, 39491307, 1; %e A305474 -32 | 12167000000, -52250000, 1; %e A305474 -35 | -134217728000, 117964800, 1; %e A305474 -36 | -1790957481984, -153542016, 1; %o A305474 (PARI) d(n) = 2*n+n%2; %o A305474 T(n, k) = polcoef(polclass(-d(n)), k); %o A305474 tabf(nn) = for(n=1, nn, for(k=0, poldegree(polclass(-d(n))), print1(T(n, k), ", ")); print) %Y A305474 Cf. A014600, A014601, A032354, A305475 (constant). %K A305474 sign,tabf,look %O A305474 1,3 %A A305474 _Seiichi Manyama_, Jun 02 2018