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A147729 as a simple table

n a(n)
1 1
2 2
3 6
4 16
5 54
6 232
7 936
8 3880
9 17302
10 81584
11 409012
12 2138674
13 11754832
14 66857094
15 395646912
16 2421309886
17 15276353934

[1,2,6,16,54,232,936,3880,17302,81584,409012,
 2138674,11754832,66857094,395646912,2421309886,
 15276353934]

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Last modified December 1 13:38 EST 2021. Contains 349429 sequences. (Running on oeis4.)