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A284838 as a simple table

n a(n)
1 0
2 40
3 1088
4 21888
5 397312
6 6883328
7 116244480
8 1932230656
9 31778668544
10 518791888896
11 8424565768192
12 136279337467904
13 2198302774788096
14 35386835907641344
15 568757233463066624
16 9130929873047519232
17 146464646890277306368
18 2347871574175904694272

[0,40,1088,21888,397312,6883328,116244480,
 1932230656,31778668544,518791888896,8424565768192,
 136279337467904,2198302774788096,
 35386835907641344,568757233463066624,
 9130929873047519232,146464646890277306368,
 2347871574175904694272]

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Last modified April 6 08:27 EDT 2020. Contains 333268 sequences. (Running on oeis4.)