A118502
formatted as a simple table:
n
a(n)
1
1
2
7
3
14
4
21
5
66
6
205
7
583
8
837
9
1259
10
1631
11
2178
12
6346
13
15851
14
58371
15
61804
16
129196
17
409879
18
1670753
[1,7,14,21,66,205,583,837,1259,1631,2178,6346, 15851,58371,61804,129196,409879,1670753]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 2 11:54 EST 2009. Contains 167921 sequences.
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