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A057381 as a simple table

n a(n)
0 1
1 0
2 0
3 0
4 3
5 0
6 6
7 12
8 3
9 72
10 66
11 144
12 822
13 480
14 3624
15 8508
16 10482
17 65856
18 94794
19 289452
20 1008420
21 1561032
22 6503532
23 15224016
24 34976979
25 125988144
26 263308986
27 805096764
28 2319752694
29 5402283396
30 17415097542
31 44310604860

[1,0,0,0,3,0,6,12,3,72,66,144,822,480,3624,8508,
 10482,65856,94794,289452,1008420,1561032,6503532,
 15224016,34976979,125988144,263308986,805096764,
 2319752694,5402283396,17415097542,44310604860]

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Last modified April 23 15:04 EDT 2024. Contains 371914 sequences. (Running on oeis4.)