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A158826 as a simple table

n a(n)
1 1
2 3
3 12
4 54
5 260
6 1310
7 6824
8 36478
9 199094
10 1105478
11 6227712
12 35520498
13 204773400
14 1191572004
15 6990859416
16 41313818217
17 245735825082
18 1470125583756
19 8840948601024
20 53417237877396
21 324123222435804
22 1974317194619712

[1,3,12,54,260,1310,6824,36478,199094,1105478,
 6227712,35520498,204773400,1191572004,6990859416,
 41313818217,245735825082,1470125583756,
 8840948601024,53417237877396,324123222435804,
 1974317194619712]

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Last modified June 25 04:09 EDT 2021. Contains 345452 sequences. (Running on oeis4.)