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A153560 as a simple table

n a(n)
0 1
1 2
2 8
3 64
4 848
5 22202
6 1109397
7 104534239
8 18430578601
9 6145119518391
10 3869729452665295
11 4596597483881683039
12 10296742221918199977665

[1,2,8,64,848,22202,1109397,104534239,18430578601,
 6145119518391,3869729452665295,
 4596597483881683039,10296742221918199977665]

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Last modified January 19 00:22 EST 2022. Contains 350464 sequences. (Running on oeis4.)