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 A109402 #8 May 25 2025 12:44:30
%S A109402 1,3,4,6,8,11,12,14,17,19,22,27,28,30,33,37,39,42,47,54,55,57,60,64,
%T A109402 69,71,74,79,86,97,98,100,103,107,112,118,120,123,128,135,146,159,160,
%U A109402 162,165,169,174,180,187,189,192,197,204,215,228,245,246
%N A109402 Partial sums of A109400.
%C A109402 a(n) = Sum(A109400(m): 1<=m<=n).
%H A109402 Harvey P. Dale, <a href="/A109402/b109402.txt">Table of n, a(n) for n = 1..1000</a>
%t A109402 Accumulate[With[{prs=Prime[Range[20]]},Flatten[Table[{Range[n],Take[prs,n]},{n,10}]]]] (* _Harvey P. Dale_, May 25 2025 *)
%Y A109402 Cf. A007504, A014370.
%K A109402 nonn
%O A109402 1,2
%A A109402 _Reinhard Zumkeller_, Jun 27 2005