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A279580 as a simple table

n a(n)
1 0
2 0
3 0
4 2
5 4
6 0
7 4
8 36
9 40
10 0
11 14
12 304
13 944
14 352
15 0
16 40
17 2212
18 20776
19 23072
20 3008
21 0
22 120
23 15428
24 406200
25 1356120
26 547168
27 25280
28 0
29 352
30 103648
31 7630156
32 72177144
33 86246944
34 12701248
35 209792
36 0
37 1032
38 680052
39 138602548
40 3684310576
41 12490527012

[0,0,0,2,4,0,4,36,40,0,14,304,944,352,0,40,2212,
 20776,23072,3008,0,120,15428,406200,1356120,
 547168,25280,0,352,103648,7630156,72177144,
 86246944,12701248,209792,0,1032,680052,138602548,
 3684310576,12490527012]

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Last modified January 19 09:16 EST 2022. Contains 350464 sequences. (Running on oeis4.)