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A222608 as a simple table

n a(n)
1 1
2 0
3 0
4 0
5 6
6 0
7 6
8 32
9 32
10 6
11 20
12 520
13 892
14 520
15 20
16 20
17 4556
18 42492
19 42492
20 4556
21 20
22 70
23 57072
24 779875
25 3584673
26 779875
27 57072
28 70
29 685
30 594544
31 41383224
32 298478633
33 298478633
34 41383224
35 594544
36 685
37 2808
38 6958016
39 735555885
40 24650010932

[1,0,0,0,6,0,6,32,32,6,20,520,892,520,20,20,4556,
 42492,42492,4556,20,70,57072,779875,3584673,
 779875,57072,70,685,594544,41383224,298478633,
 298478633,41383224,594544,685,2808,6958016,
 735555885,24650010932]

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Last modified October 18 17:19 EDT 2021. Contains 348068 sequences. (Running on oeis4.)