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A155357 as a simple table

n a(n)
4 1
5 7
6 19
7 37
8 209
9 927
10 4735
11 37071
12 286745
13 2579963
14 31707495
15 434469270
16 7173015390
17 147194484531
18 3498010136593

[1,7,19,37,209,927,4735,37071,286745,2579963,
 31707495,434469270,7173015390,147194484531,
 3498010136593]

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Last modified December 5 06:52 EST 2021. Contains 349543 sequences. (Running on oeis4.)