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A278414 as a simple table

n a(n)
1 0
2 0
3 0
4 1
5 20
6 1
7 15
8 264
9 264
10 15
11 90
12 2550
13 9354
14 2550
15 90
16 357
17 22267
18 201539
19 201539
20 22267
21 357
22 1107
23 166762
24 3576730
25 11454780
26 3576730
27 166762
28 1107
29 2907
30 1046418
31 58069125
32 514122657
33 514122657
34 58069125
35 1046418
36 2907
37 6765
38 5586207

[0,0,0,1,20,1,15,264,264,15,90,2550,9354,2550,90,
 357,22267,201539,201539,22267,357,1107,166762,
 3576730,11454780,3576730,166762,1107,2907,1046418,
 58069125,514122657,514122657,58069125,1046418,
 2907,6765,5586207]

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Last modified August 1 19:22 EDT 2024. Contains 374817 sequences. (Running on oeis4.)