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A147946 as a simple table

n a(n)
1 1
2 2
3 6
4 24
5 74
6 368
7 2214
8 10892
9 69096
10 527234
11 3431668
12 27480534
13 255515792
14 1977816278
15 19064332502
16 208268352068 

[1,2,6,24,74,368,2214,10892,69096,527234,3431668,
 27480534,255515792,1977816278,19064332502,
 208268352068]

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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)