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A147906 as a simple table

n a(n)
1 1
2 2
3 6
4 24
5 96
6 444
7 2508
8 13216
9 74772
10 490758
11 3587634
12 32230992
13 247788878
14 2035600526
15 18463836692
16 192838249056 

[1,2,6,24,96,444,2508,13216,74772,490758,3587634,
 32230992,247788878,2035600526,18463836692,
 192838249056]

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Last modified April 19 02:28 EDT 2024. Contains 371782 sequences. (Running on oeis4.)