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 A308943 a(n) = Product_{d|n} binomial(n,d). 1

%I

%S 1,2,3,24,5,1800,7,15680,756,113400,11,79693891200,13,4372368,

%T 20495475,44972928000,17,2028339316523520,19,52737518268864000,

%U 3247700400,3585005424,23,38135556819759802035135799296,1328250,87885070000,370142004375,10293527616645873600000,29

%N a(n) = Product_{d|n} binomial(n,d).

%H Seiichi Manyama, <a href="/A308943/b308943.txt">Table of n, a(n) for n = 1..419</a>

%t Table[Product[Binomial[n, d], {d, Divisors[n]}], {n, 1, 29}]

%o (PARI) a(n) = my(p=1); fordiv(n, d, p *= binomial(n, d)); p; \\ _Michel Marcus_, Jul 02 2019

%Y Cf. A001142, A008578 (fixed points), A056045, A098710, A135396.

%K nonn

%O 1,2

%A _Ilya Gutkovskiy_, Jul 01 2019

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Last modified May 16 12:46 EDT 2021. Contains 343947 sequences. (Running on oeis4.)