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 A293955 #9 Oct 30 2017 18:01:30
%S A293955 1,3,9,41,391,9103,535951,80825743,31508994061,31937977439061,
%T A293955 84479516648536637,584608936935076469309,10605380482241904040731709,
%U A293955 505256047119225750718027007037,63321087426482869467351750978047037,20908732615936655362731019703436410620989
%N A293955 Partial sums of A055612.
%H A293955 Robert Israel, <a href="/A293955/b293955.txt">Table of n, a(n) for n = 0..69</a>
%p A293955 ListTools:-PartialSums([seq(mul(binomial(n,m)+1,m=1..n),n=0..20)]); # _Robert Israel_, Oct 30 2017
%t A293955 Accumulate@ Array[Product[1 + Binomial[#, m], {m, #}] &, 16, 0] (* _Michael De Vlieger_, Oct 30 2017 *)
%Y A293955 Cf. A055612, A217716, A293954.
%K A293955 nonn
%O A293955 0,2
%A A293955 _N. J. A. Sloane_, Oct 30 2017