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A258216 as a simple table

n a(n)
0 1
1 1
2 2
3 6
4 24
5 120
6 480
7 3600
8 30240
9 151200
10 1693440
11 20321280
12 121927680
13 1828915200
14 28740096000
15 201180672000
16 3793692672000
17 73977007104000
18 591816056832000
19 13463815292928000
20 314155690168320000

[1,1,2,6,24,120,480,3600,30240,151200,1693440,
 20321280,121927680,1828915200,28740096000,
 201180672000,3793692672000,73977007104000,
 591816056832000,13463815292928000,
 314155690168320000]

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Last modified March 19 03:33 EDT 2024. Contains 370952 sequences. (Running on oeis4.)