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A159370 as a simple table

n a(n)
5 20
6 64440
7 20417688
8 3553639544
9 136157771160
10 2292617515072
11 23218711066200
12 166097016796752
13 921709788123744
14 4211771972031320
15 16503648565063896
16 57078845541052008
17 177996206009045096
18 508664826181945152

[20,64440,20417688,3553639544,136157771160,
 2292617515072,23218711066200,166097016796752,
 921709788123744,4211771972031320,
 16503648565063896,57078845541052008,
 177996206009045096,508664826181945152]

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Last modified August 12 11:42 EDT 2022. Contains 356071 sequences. (Running on oeis4.)