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A147887 as a simple table

n a(n)
1 1
2 2
3 6
4 24
5 96
6 528
7 2418
8 14676
9 109882
10 996240
11 7675118
12 67181516
13 718155492
14 8798220008
15 93512144280
16 1080953807952 

[1,2,6,24,96,528,2418,14676,109882,996240,7675118,
 67181516,718155492,8798220008,93512144280,
 1080953807952]

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Last modified April 25 01:06 EDT 2024. Contains 371964 sequences. (Running on oeis4.)