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A309618 as a simple table

n a(n)
0 1
1 1
2 4
3 8
4 36
5 140
6 832
7 5376
8 42432
9 374592
10 3720960
11 40694784
12 486679296
13 6310114560
14 88168366080
15 1320468480000
16 21101183631360
17 358354687426560
18 6444941507297280
19 122367252835860480
20 2445878526994022400
21 51337143210820239360
22 1128918790687649955840

[1,1,4,8,36,140,832,5376,42432,374592,3720960,
 40694784,486679296,6310114560,88168366080,
 1320468480000,21101183631360,358354687426560,
 6444941507297280,122367252835860480,
 2445878526994022400,51337143210820239360,
 1128918790687649955840]

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Last modified July 14 09:01 EDT 2024. Contains 374318 sequences. (Running on oeis4.)