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A052577 as a simple table

n a(n)
0 1
1 4
2 26
3 240
4 2904
5 43680
6 786960
7 16531200
8 396789120
9 10713669120
10 321413702400
11 10606692096000
12 381841394457600
13 14891820610867200
14 625456552834713600
15 28145546185236480000
16 1350986237814140928000
17 68900298484208615424000
18 3720616124549638938624000

[1,4,26,240,2904,43680,786960,16531200,396789120,
 10713669120,321413702400,10606692096000,
 381841394457600,14891820610867200,
 625456552834713600,28145546185236480000,
 1350986237814140928000,68900298484208615424000,
 3720616124549638938624000]

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)