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A017689 as a simple table

n a(n)
1 1
2 8193
3 1594324
4 67117057
5 1220703126
6 1088524711
7 96889010408
8 549822930945
9 2541867422653
10 5000610355659
11 34522712143932
12 26751583696117
13 302875106592254
14 99226457784093
15 648732096885608
16 4504149450301441
17 9904578032905938
18 6941839931265343
19 42052983462257060 

[1,8193,1594324,67117057,1220703126,1088524711,
 96889010408,549822930945,2541867422653,
 5000610355659,34522712143932,26751583696117,
 302875106592254,99226457784093,648732096885608,
 4504149450301441,9904578032905938,
 6941839931265343,42052983462257060]

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Last modified June 4 17:49 EDT 2024. Contains 373102 sequences. (Running on oeis4.)