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 A094675 #12 May 06 2020 05:36:41 %S A094675 1,0,-3,0,1,0,15,0,-10,0,-105,0,1,0,105,0,945,0,-21,0,-1260,0,-10395, %T A094675 0,1,0,378,0,17325,0,135135,0,-36,0,-6930,0,-270270,0,-2027025,0,1,0, %U A094675 990,0,135135,0,4729725,0,34459425,0,-55,0,-25740,0,-2837835,0,-91891800,0 %N A094675 Coefficients of polynomial in x multiplying cosh(x) in the modified spherical Bessel function of the first kind i_n(x). %e A094675 Sinh(x)/x, (x*cosh(x) - sinh(x))/x^2, (-3*x*cosh(x) + (3 + x^2)*sinh(x))/x^3, ... %e A094675 Triangle begins: %e A094675 1, 0; %e A094675 -3, 0; %e A094675 1, 0, 15, 0; %e A094675 -10, 0, -105, 0; %e A094675 1, 0, 105, 0, 945, 0; %e A094675 ... %Y A094675 Cf. A094674. %K A094675 sign,tabf %O A094675 0,3 %A A094675 _Eric W. Weisstein_, May 19 2004 %E A094675 Keyword tabf from _Michel Marcus_, May 06 2020