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A296939 as a simple table

n a(n)
0 1
1 0
2 3
3 15
4 644
5 17145
6 1124673
7 74115496
8 7730031915
9 921044459943
10 145334164141820
11 26830525240048761
12 6053646614467427553
13 1586816790903080698000
14 487642998132913180824819
15 171640559783810345998524735
16 69078935661419038650738789428

[1,0,3,15,644,17145,1124673,74115496,7730031915,
 921044459943,145334164141820,26830525240048761,
 6053646614467427553,1586816790903080698000,
 487642998132913180824819,
 171640559783810345998524735,
 69078935661419038650738789428]

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Last modified April 25 11:39 EDT 2024. Contains 371969 sequences. (Running on oeis4.)