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A221240 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 5
6 0
7 0
8 53
9 53
10 0
11 0
12 467
13 1979
14 467
15 0
16 0
17 3913
18 67710
19 67710
20 3913
21 0
22 0
23 32299
24 2217402
25 8959341
26 2217402
27 32299
28 0
29 0
30 265353
31 71862107
32 1130617545
33 1130617545
34 71862107
35 265353
36 0
37 0
38 2176758
39 2319920239
40 141336723259

[0,0,0,0,5,0,0,53,53,0,0,467,1979,467,0,0,3913,
 67710,67710,3913,0,0,32299,2217402,8959341,
 2217402,32299,0,0,265353,71862107,1130617545,
 1130617545,71862107,265353,0,0,2176758,2319920239,
 141336723259]

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Last modified January 19 20:16 EST 2022. Contains 350466 sequences. (Running on oeis4.)