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 A258317 #7 Jan 23 2022 07:30:28
%S A258317 0,0,1,2,13,16,50,46,331,710,1530,1968,6694,8352,15550,24890,133573,
%T A258317 181552,486054,641978,1840816,3296140,6314768,7452540,34421218,
%U A258317 59313706,110347662,258695534,627750404,874913936,2053073798,2556088458,12615058063,22442790438
%N A258317 Row sums of triangle A258197.
%H A258317 Reinhard Zumkeller, <a href="/A258317/b258317.txt">Table of n, a(n) for n = 0..1000</a>
%F A258317 a(n) = Sum_{k=0..n} A258197(n,k).
%o A258317 (Haskell)
%o A258317 a258317 = sum . a258197_row
%o A258317 (PARI) f(n) = vecsum([n/f[1]*f[2]|f<-factor(n+!n)~]); \\ A003415
%o A258317 a(n) = vecsum(vector(n+1, k, f(binomial(n,k-1)))); \\ _Michel Marcus_, Jan 23 2022
%Y A258317 Cf. A258197.
%K A258317 nonn
%O A258317 0,4
%A A258317 _Reinhard Zumkeller_, May 26 2015