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A187746 as a simple table

n a(n)
0 1
1 2
2 13
3 100
4 984
5 11712
6 163200
7 2603520
8 46771200
9 934133760
10 20530298880
11 492355584000
12 12793813401600
13 358063276032000
14 10737974299852800
15 343513154086502400
16 11676590580695040000
17 420271561157640192000
18 15967576932074127360000

[1,2,13,100,984,11712,163200,2603520,46771200,
 934133760,20530298880,492355584000,12793813401600,
 358063276032000,10737974299852800,
 343513154086502400,11676590580695040000,
 420271561157640192000,15967576932074127360000]

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Last modified August 15 03:46 EDT 2024. Contains 375172 sequences. (Running on oeis4.)