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 A327025 #5 Aug 25 2019 01:55:43
%S A327025 1,1,4,11,40,165,930,6109,47364,416259,4092332,44424105,527512456,
%T A327025 6798907261,94504292830,1408973416983,22426222792568,379522092608193,
%U A327025 6804315178122972,128828842646944153,2568533750232696472,53788282243854348683,1180357162840669081094
%N A327025 a(n) = Sum_{k=0..n} k! * Sum_{d|n} phi(d) * A008284(n/d, k).
%Y A327025 Row sums of A327028.
%K A327025 nonn
%O A327025 0,3
%A A327025 _Peter Luschny_, Aug 23 2019