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A215854 as a simple table

n a(n)
4 1
5 10
6 125
7 1610
8 23597
9 394506
10 7533445
11 163190665
12 3971678359
13 107502644249
14 3205669601953
15 104435680520535
16 3690517248021753
17 140590728463023632
18 5743180320999041664
19 250423270549658253350
20 11608409727652016747176
21 570034426072900362961212

[1,10,125,1610,23597,394506,7533445,163190665,
 3971678359,107502644249,3205669601953,
 104435680520535,3690517248021753,
 140590728463023632,5743180320999041664,
 250423270549658253350,11608409727652016747176,
 570034426072900362961212]

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Last modified February 19 10:03 EST 2020. Contains 332041 sequences. (Running on oeis4.)