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A155290 as a simple table

n a(n)
4 1
5 7
6 25
7 64
8 265
9 1577
10 11987
11 107928
12 1180991
13 15701569
14 264954393
15 5697447937
16 151647215266 

[1,7,25,64,265,1577,11987,107928,1180991,15701569,
 264954393,5697447937,151647215266]

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Last modified June 2 00:37 EDT 2024. Contains 373032 sequences. (Running on oeis4.)