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