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A221655 as a simple table

n a(n)
1 0
2 1
3 0
4 2
5 4
6 0
7 4
8 24
9 12
10 0
11 8
12 165
13 230
14 40
15 0
16 16
17 1054
18 5879
19 2594
20 136
21 0
22 32
23 6862
24 128076
25 233781
26 28478
27 460
28 0
29 64
30 44576
31 2853634
32 17254611
33 9205038
34 313721
35 1556
36 0
37 128
38 289789
39 63318470
40 1312503181
41 2299842566
42 361920243
43 3449644
44 5264
45 0

[0,1,0,2,4,0,4,24,12,0,8,165,230,40,0,16,1054,
 5879,2594,136,0,32,6862,128076,233781,28478,460,0,
 64,44576,2853634,17254611,9205038,313721,1556,0,
 128,289789,63318470,1312503181,2299842566,
 361920243,3449644,5264,0]

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Last modified January 25 11:49 EST 2022. Contains 350567 sequences. (Running on oeis4.)