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A122660 as a simple table

n a(n)
2 0
3 1
4 0
5 3
6 4
7 22
8 70
9 482
10 2955
11 17907
12 114642
13 825097
14 5843386
15 41036436
16 297986872 

[0,1,0,3,4,22,70,482,2955,17907,114642,825097,
 5843386,41036436,297986872]

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Last modified April 23 08:33 EDT 2024. Contains 371905 sequences. (Running on oeis4.)