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A117787 as a simple table

n a(n)
1 4
2 4
3 17
4 17
5 81
6 81
7 499
8 499
9 3416
10 3416
11 24255
12 24255
13 181998
14 181998
15 1428698
16 1428698
17 11139859
18 11139859
19 89160415
20 89160415

[4,4,17,17,81,81,499,499,3416,3416,24255,24255,
 181998,181998,1428698,1428698,11139859,11139859,
 89160415,89160415]

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Last modified April 23 05:37 EDT 2024. Contains 371906 sequences. (Running on oeis4.)