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A187018 as a simple table

n a(n)
0 1
1 1
2 5
3 19
4 145
5 851
6 7741
7 58605
8 600769
9 5420035
10 61026901
11 628076153
12 7648488145
13 87388647373
14 1138801242125
15 14182492489651
16 196218339243777
17 2628971539313875
18 38377805385510181
19 547815690902283225
20 8395817775835635601
21 126725586542235932329

[1,1,5,19,145,851,7741,58605,600769,5420035,
 61026901,628076153,7648488145,87388647373,
 1138801242125,14182492489651,196218339243777,
 2628971539313875,38377805385510181,
 547815690902283225,8395817775835635601,
 126725586542235932329]

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Last modified July 23 22:20 EDT 2021. Contains 346265 sequences. (Running on oeis4.)