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A005155 as a simple table

n a(n)
0 1
1 1
2 2
3 8
4 54
5 533
6 6944
7 111850
8 2135740
9 47003045
10 1168832808
11 32363244260
12 986532609608
13 32810811179569
14 1181865951824800
15 45823912079507918
16 1902469319507438352
17 84195282530581058825
18 3956365033583165905568
19 196716723188140236180160

[1,1,2,8,54,533,6944,111850,2135740,47003045,
 1168832808,32363244260,986532609608,
 32810811179569,1181865951824800,45823912079507918,
 1902469319507438352,84195282530581058825,
 3956365033583165905568,196716723188140236180160]

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Last modified March 28 04:13 EDT 2024. Contains 371235 sequences. (Running on oeis4.)