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A188981 as a simple table

n a(n)
1 0
2 1
3 1
4 2
5 9
6 2
7 4
8 116
9 116
10 4
11 6
12 900
13 7264
14 900
15 6
16 13
17 7836
18 295264
19 295264
20 7836
21 13
22 24
23 71865
24 12838276
25 54113236
26 12838276
27 71865
28 24
29 45
30 640513
31 577290185
32 10523263424
33 10523263424
34 577290185
35 640513
36 45
37 84
38 5706113
39 25631148992

[0,1,1,2,9,2,4,116,116,4,6,900,7264,900,6,13,7836,
 295264,295264,7836,13,24,71865,12838276,54113236,
 12838276,71865,24,45,640513,577290185,10523263424,
 10523263424,577290185,640513,45,84,5706113,
 25631148992]

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Last modified October 25 01:40 EDT 2021. Contains 348233 sequences. (Running on oeis4.)