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A162970 as a simple table

n a(n)
1 0
2 1
3 3
4 12
5 40
6 150
7 546
8 2128
9 8352
10 34380
11 144100
12 626736
13 2784288
14 12753832
15 59692920
16 286857600
17 1407536896
18 7069630608
19 36217682352
20 189489626560
21 1010037302400
22 5488251406176
23 30348031302688
24 170812160339712

[0,1,3,12,40,150,546,2128,8352,34380,144100,
 626736,2784288,12753832,59692920,286857600,
 1407536896,7069630608,36217682352,189489626560,
 1010037302400,5488251406176,30348031302688,
 170812160339712]

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)