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 A323995 #8 Feb 14 2019 22:25:09
%S A323995 1,1,7,2,13,31,63047,1069
%N A323995 Numerators of coefficients for central differences M_{6}^(2*n).
%C A323995 Salzer's table extends to M_{6}^(30).
%H A323995 H. E. Salzer, <a href="https://doi.org/10.1002/sapm1963421162">Tables of coefficients for obtaining central differences from the derivatives</a>, Journal of Mathematics and Physics (this journal is also called Studies in Applied Mathematics), 42 (1963), 162-165, plus several inserted tables.
%H A323995 H. E. Salzer, <a href="/A002675/a002675.png">Annotated scanned copy of left side of Table II</a>.
%Y A323995 Cf. A323996 (denominators).
%K A323995 nonn,frac,more
%O A323995 3,3
%A A323995 _N. J. A. Sloane_, Feb 14 2019