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A145889 as a simple table

n a(n)
1 0
2 1
3 2
4 24
5 96
6 1080
7 6480
8 80640
9 645120
10 9072000
11 90720000
12 1437004800
13 17244057600
14 305124019200
15 4271736268800
16 83691159552000
17 1339058552832000
18 28810681675776000
19 518592270163968000
20 12164510040883200000

[0,1,2,24,96,1080,6480,80640,645120,9072000,
 90720000,1437004800,17244057600,305124019200,
 4271736268800,83691159552000,1339058552832000,
 28810681675776000,518592270163968000,
 12164510040883200000]

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)