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A026842 as a simple table

n a(n)
3 1
4 9
5 56
6 300
7 1487
8 7041
9 32381
10 146017
11 649395
12 2859231
13 12494914
14 54291912
15 234860677
16 1012433965
17 4352210327
18 18666918033
19 79916230409
20 341615895659
21 1458457275715
22 6220016154525
23 26503542364381
24 112847001503099
25 480173686483581

[1,9,56,300,1487,7041,32381,146017,649395,2859231,
 12494914,54291912,234860677,1012433965,4352210327,
 18666918033,79916230409,341615895659,
 1458457275715,6220016154525,26503542364381,
 112847001503099,480173686483581]

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Last modified April 19 05:19 EDT 2024. Contains 371782 sequences. (Running on oeis4.)