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A145955 as a simple table

n a(n)
1 1
2 1
3 1
4 3
5 9
6 23
7 125
8 821
9 6239
10 71403
11 1048093
12 19913069
13 517074745
14 17642361171
15 795865550951
16 47901047706833
17 3815017258032049
18 403246928224172293
19 56605968541991726917
20 10536114891916229568297
21 2602764408693859006627701

[1,1,1,3,9,23,125,821,6239,71403,1048093,19913069,
 517074745,17642361171,795865550951,47901047706833,
 3815017258032049,403246928224172293,
 56605968541991726917,10536114891916229568297,
 2602764408693859006627701]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)