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A025553 as a simple table

n a(n)
1 1
2 2
3 5
4 17
5 18
6 93
7 189
8 1335
9 1341
10 4033
11 4038
12 44448
13 44463
14 578124
15 1156353
16 1156409
17 1156437
18 19659681
19 19659807
20 373537593
21 373538223
22 373538553
23 373538718
24 8591392494
25 8591393484
26 42956969994
27 42956971281
28 128870915845
29 128870916846

[1,2,5,17,18,93,189,1335,1341,4033,4038,44448,
 44463,578124,1156353,1156409,1156437,19659681,
 19659807,373537593,373538223,373538553,373538718,
 8591392494,8591393484,42956969994,42956971281,
 128870915845,128870916846]

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Last modified September 17 06:16 EDT 2021. Contains 347478 sequences. (Running on oeis4.)