login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A088275
as a simple table
n
a(n)
1
1
2
2
3
3
4
4
5
9
6
18
7
22
8
45
9
49
10
56
11
69
12
146
13
202
14
272
15
2730
16
2841
17
4562
18
31810
19
43186
20
48109
21
92691
22
237670
[1,2,3,4,9,18,22,45,49,56,69,146,202,272,2730, 2841,4562,31810,43186,48109,92691,237670]