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A155397 as a simple table

n a(n)
6 1
7 4
8 13
9 45
10 194
11 809
12 3321
13 15727
14 81305
15 509040
16 3870198
17 33980590
18 341474106

[1,4,13,45,194,809,3321,15727,81305,509040,
 3870198,33980590,341474106]

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Last modified February 2 21:10 EST 2023. Contains 360024 sequences. (Running on oeis4.)