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A222605 as a simple table

n a(n)
1 0
2 6
3 32
4 520
5 4556
6 57072
7 594544
8 6958016
9 77112256
10 888878720
11 10094914368
12 116306178816
13 1336001507840
14 15439492158976
15 178494573538304
16 2069940863792128
17 24032638451858432
18 279564150926585856

[0,6,32,520,4556,57072,594544,6958016,77112256,
 888878720,10094914368,116306178816,1336001507840,
 15439492158976,178494573538304,2069940863792128,
 24032638451858432,279564150926585856]

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Last modified October 17 13:32 EDT 2021. Contains 348049 sequences. (Running on oeis4.)