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A302605 as a simple table

n a(n)
0 0
1 1
2 4
3 28
4 272
5 3384
6 51300
7 917064
8 18884672
9 440168832
10 11454902500
11 329208395264
12 10355322975120
13 353851897861760
14 13052503620917124
15 516917167506777600
16 21875427250996723968
17 985164766018898243584
18 47043119138733155306052
19 2374168079889664129576960

[0,1,4,28,272,3384,51300,917064,18884672,
 440168832,11454902500,329208395264,10355322975120,
 353851897861760,13052503620917124,
 516917167506777600,21875427250996723968,
 985164766018898243584,47043119138733155306052,
 2374168079889664129576960]

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Last modified April 23 23:26 EDT 2024. Contains 371917 sequences. (Running on oeis4.)