A006908
formatted as a simple table:
n
a(n)
1
1
2
4
3
8
4
21
5
39
6
92
7
170
8
331
9
593
10
1176
11
2118
12
3699
13
6658
14
11347
15
19760
16
32746
17
54854
18
90245
[1,4,8,21,39,92,170,331,593,1176,2118,3699,6658, 11347,19760,32746,54854,90245]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 5 23:38 EST 2009. Contains 170428 sequences.
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