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A168452 as a simple table

n a(n)
0 1
1 4
2 24
3 180
4 1556
5 14840
6 152092
7 1646652
8 18613664
9 217852008
10 2623657384
11 32361812912
12 407342311632
13 5217211974832
14 67836910362772
15 893766246630572
16 11913422912188432
17 160450066324972472
18 2181014117345997704
19 29894260817385950064
20 412839378639052110464

[1,4,24,180,1556,14840,152092,1646652,18613664,
 217852008,2623657384,32361812912,407342311632,
 5217211974832,67836910362772,893766246630572,
 11913422912188432,160450066324972472,
 2181014117345997704,29894260817385950064,
 412839378639052110464]

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Last modified March 29 00:26 EDT 2024. Contains 371264 sequences. (Running on oeis4.)