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 A173407 #13 Jul 18 2022 02:53:29
%S A173407 1,2,4,9,14,30,37,87,121,166,174,475,484,547,651,2605,2615,3598,3606,
%T A173407 4723,4887,4946,4953,29953,30164,30260,32652,34506,34514,40226,40238,
%U A173407 2841562,2841724,2841839,2842246,2963525,2963536,2963612,2963918,3279760,3279770,3289261,3289271,3291384,3302307,3302363,3302369
%N A173407 Partial sums of A002106.
%C A173407 Partial sums of number of transitive permutation groups of degree n. The subsequence of primes in this partial sum begins: 2, 37, 547, 4723. The subsequence of squares in this partial sum begins: 1, 4, 9, 121, 484.
%F A173407 a(n) = Sum_{i=1..n} A002106(i).
%t A173407 Cases[Import["https://oeis.org/A002106/b002106.txt", "Table"], {_, _}][[All, 2]] // Accumulate (* _Jean-François Alcover_, Jan 03 2020 *)
%Y A173407 Cf. A000001, A000019, A002106, A173397.
%K A173407 nonn,hard
%O A173407 1,2
%A A173407 _Jonathan Vos Post_, Feb 17 2010
%E A173407 More terms from _Jinyuan Wang_, Feb 23 2020
%E A173407 More terms from _Vaclav Kotesovec_, Jul 18 2022