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A273055 as a simple table

n a(n)
0 1
1 7
2 51
3 393
4 3139
5 25653
6 212941
7 1787607
8 15134931
9 128996853
10 1105350729
11 9513228123
12 82176836301
13 712070156203
14 6186675630819
15 53876592856681
16 470139239360787
17 4109922421017093
18 35986168879543609
19 315544068167601787
20 2770417140954208377
21 24352194654450483759

[1,7,51,393,3139,25653,212941,1787607,15134931,
 128996853,1105350729,9513228123,82176836301,
 712070156203,6186675630819,53876592856681,
 470139239360787,4109922421017093,
 35986168879543609,315544068167601787,
 2770417140954208377,24352194654450483759]

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Last modified June 13 11:36 EDT 2021. Contains 344990 sequences. (Running on oeis4.)