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 A001315 M1158 N0441 #19 Feb 03 2022 02:31:33
%S A001315 2,4,8,20,100,2116,1114244,68723671300,1180735735906024030724,
%T A001315 170141183460507917357914971986913657860
%N A001315 a(n) = Sum_{k=0..n} 2^binomial(n,k).
%D A001315 H. W. Gould, Exponential Binomial Coefficient Series. Tech. Rep. 4, Math. Dept., West Virginia Univ., Morgantown, WV, Sep. 1961.
%D A001315 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
%D A001315 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H A001315 T. D. Noe, <a href="/A001315/b001315.txt">Table of n, a(n) for n = 0..13</a>
%t A001315 Table[Sum[2^Binomial[n, k], {k, 0, n}], {n, 0, 13}] (* _T. D. Noe_, Jun 28 2012 *)
%K A001315 nonn
%O A001315 0,1
%A A001315 _N. J. A. Sloane_