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 A271374 #28 Sep 08 2021 11:21:51
%S A271374 3,16,38,128,324,1068,2569,8381,20457,58174,148059,441493,916146,
%T A271374 3722968,8407790,23909586,64576509,178009925,466027279,1409607602,
%U A271374 3507905894,9694292108,25391646456,73838562312,191793924162,550333004128
%N A271374 Total number of polydivisible numbers in base n.
%H A271374 Wikipedia, <a href="https://en.wikipedia.org/wiki/Polydivisible_number">Polydivisible number</a>.
%F A271374 a(n) = Sum_{k=1..A109783(n)} A271373(n,k).
%F A271374 a(n) ~ (n-1)*(exp(n)-1)/n.
%e A271374 There are a(10) = 20457 polydivisible numbers in base 10, which are listed in A144688.
%Y A271374 Row sums of A271373.
%Y A271374 Cf. A109032, A109783, A144688.
%K A271374 nonn,base,more
%O A271374 2,1
%A A271374 _Martin Renner_, Apr 05 2016
%E A271374 a(16) from _Seiichi Manyama_, Sep 01 2019
%E A271374 a(17)-a(18) from _Seiichi Manyama_, Sep 02 2019
%E A271374 a(19)-a(27) from _Max Alekseyev_, Sep 08 2021