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A187657 as a simple table

n a(n)
0 1
1 2
2 16
3 222
4 4416
5 114660
6 3676814
7 140408338
8 6222858240
9 314006546124
10 17774855765140
11 1115507717954432
12 76871991664546170
13 5770732305836768712
14 468750121409142448386
15 40964179307489016777630
16 3832326196169482368117760

[1,2,16,222,4416,114660,3676814,140408338,
 6222858240,314006546124,17774855765140,
 1115507717954432,76871991664546170,
 5770732305836768712,468750121409142448386,
 40964179307489016777630,3832326196169482368117760]

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)