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A221873 as a simple table

n a(n)
1 0
2 1
3 1
4 0
5 20
6 0
7 1
8 162
9 162
10 1
11 0
12 1442
13 2847
14 1442
15 0
16 1
17 12688
18 109441
19 109441
20 12688
21 1
22 0
23 110720
24 2902629
25 14388224
26 2902629
27 110720
28 0
29 1
30 970828
31 89325897
32 1572414124
33 1572414124
34 89325897
35 970828
36 1
37 0
38 8489090
39 2568285560

[0,1,1,0,20,0,1,162,162,1,0,1442,2847,1442,0,1,
 12688,109441,109441,12688,1,0,110720,2902629,
 14388224,2902629,110720,0,1,970828,89325897,
 1572414124,1572414124,89325897,970828,1,0,8489090,
 2568285560]

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Last modified June 13 05:28 EDT 2024. Contains 373366 sequences. (Running on oeis4.)