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A221266 as a simple table

n a(n)
1 3
2 19
3 141
4 1073
5 8203
6 62771
7 480437
8 3677345
9 28147315
10 215447091
11 1649090685
12 12622590641
13 96616760123
14 739531104531
15 5660573328101
16 43327576375905
17 331641119361379
18 2538471829096403
19 19430157634105069
20 148723740543110065

[3,19,141,1073,8203,62771,480437,3677345,28147315,
 215447091,1649090685,12622590641,96616760123,
 739531104531,5660573328101,43327576375905,
 331641119361379,2538471829096403,
 19430157634105069,148723740543110065]

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Last modified April 18 20:26 EDT 2024. Contains 371781 sequences. (Running on oeis4.)