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A355285 as a simple table

n a(n)
0 1
1 0
2 0
3 0
4 6
5 24
6 120
7 720
8 7560
9 76608
10 810432
11 9141120
12 118015920
13 1666336320
14 25211774016
15 404932155264
16 6951992261760
17 127203705538560
18 2467434718218240
19 50477473338494976
20 1086707769452699904
21 24573149993692615680
22 582367494447600583680
23 14430857455114783119360

[1,0,0,0,6,24,120,720,7560,76608,810432,9141120,
 118015920,1666336320,25211774016,404932155264,
 6951992261760,127203705538560,2467434718218240,
 50477473338494976,1086707769452699904,
 24573149993692615680,582367494447600583680,
 14430857455114783119360]

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Last modified August 22 06:14 EDT 2024. Contains 375356 sequences. (Running on oeis4.)