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A331957 as a simple table

n a(n)
0 1
1 1
2 2
3 8
4 64
5 872
6 18024
7 525520
8 20541392
9 1036555120
10 65591856032
11 5085891210864
12 474213645013904
13 52346708185187392
14 6751386193135966464
15 1005991884967386086400
16 171500271138273300946720
17 33167303833191421470542496
18 7222314392966179538774364128
19 1759036134944451206655721276256

[1,1,2,8,64,872,18024,525520,20541392,1036555120,
 65591856032,5085891210864,474213645013904,
 52346708185187392,6751386193135966464,
 1005991884967386086400,171500271138273300946720,
 33167303833191421470542496,
 7222314392966179538774364128,
 1759036134944451206655721276256]

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Last modified March 29 05:16 EDT 2024. Contains 371264 sequences. (Running on oeis4.)