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A053623 as a simple table

n a(n)
1 1
2 2
3 4
4 14
5 38
6 126
7 252
8 1662
9 7180
10 39430
11 111064
12 803876
13 2863992
14 12123360
15 24246720
16 329012784
17 2602608516 

[1,2,4,14,38,126,252,1662,7180,39430,111064,
 803876,2863992,12123360,24246720,329012784,
 2602608516]

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Last modified May 10 05:27 EDT 2024. Contains 372356 sequences. (Running on oeis4.)