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A324317 as a simple table

n a(n)
1 0
2 0
3 0
4 2
5 4
6 9
7 19
8 51
9 107
10 219
11 417
12 757
13 1470
14 2666
15 5040
16 9280
17 17210
18 32039
19 59762
20 111811
21 210627
22 397968 

[0,0,0,2,4,9,19,51,107,219,417,757,1470,2666,5040,
 9280,17210,32039,59762,111811,210627,397968]

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Last modified July 9 19:42 EDT 2024. Contains 374191 sequences. (Running on oeis4.)