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A216818 as a simple table

n a(n)
4 1
5 0
6 2
7 4
8 12
9 32
10 110
11 340
12 1193
13 4080
14 14786
15 53428

[1,0,2,4,12,32,110,340,1193,4080,14786,53428]

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Last modified March 29 02:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)