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 A368429 #17 Dec 28 2023 15:03:52
%S A368429 1,0,0,1,4,17,68,267,1041,4049,15739,61194,238081,927071,3613362,
%T A368429 14097113,55050810,215178232,841813885,3296075636,12915801131,
%U A368429 50648751006,198756000104,780472848048,3066651564995,12056585499217,47426685674204,186657789816391,734990466616069
%N A368429 Main diagonal of A357914.
%H A368429 Paolo Xausa, <a href="/A368429/b368429.txt">Table of n, a(n) for n = 1..1000</a>
%F A368429 a(n) = A357914(n,n).
%t A368429 With[{nmax=30},Diagonal[NestList[Accumulate,MoebiusMu[Range[nmax]],nmax-1]]]
%Y A368429 Cf. A008683, A357914.
%K A368429 nonn,easy
%O A368429 1,5
%A A368429 _Paolo Xausa_, Dec 24 2023