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A006926 as a simple table

n a(n)
0 0
1 0
2 0
3 0
4 0
5 0
6 0
7 1
8 1
9 5
10 32
11 385
12 7573
13 181224
14 4624480
15 122089998
16 3328899586
17 93988909755

[0,0,0,0,0,0,0,1,1,5,32,385,7573,181224,4624480,
 122089998,3328899586,93988909755]

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Last modified August 8 01:04 EDT 2024. Contains 375018 sequences. (Running on oeis4.)