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A066992 as a simple table

n a(n)
1 4
2 72
3 1000
4 14700
5 206388
6 3201660
7 46132944
8 690153750
9 8341753936986000
10 127726170599795040
11 1963050484817866410
12 29928758453499691665
13 466352632039095734625
14 7143496319608441446500
15 111027787209709780725315

[4,72,1000,14700,206388,3201660,46132944,
 690153750,8341753936986000,127726170599795040,
 1963050484817866410,29928758453499691665,
 466352632039095734625,7143496319608441446500,
 111027787209709780725315]

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Last modified April 21 07:21 EDT 2024. Contains 371850 sequences. (Running on oeis4.)