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A079854 as a simple table

n a(n)
1 1
2 1
3 2
4 6
5 24
6 120
7 840
8 6720
9 60480
10 604800
11 6652800
12 86486400
13 1210809600
14 18162144000
15 308756448000
16 4940103168000
17 88921857024000
18 1689515283456000
19 35479820952576000
20 780556060956672000
21 17952789402003456000

[1,1,2,6,24,120,840,6720,60480,604800,6652800,
 86486400,1210809600,18162144000,308756448000,
 4940103168000,88921857024000,1689515283456000,
 35479820952576000,780556060956672000,
 17952789402003456000]

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Last modified April 19 03:26 EDT 2024. Contains 371782 sequences. (Running on oeis4.)