A117480
formatted as a simple table:
n
a(n)
1
3
2
5
3
9
4
15
5
39
6
99
7
345
8
22269
9
79809
10
187125
11
347979
12
2171619
13
4219797675
14
98059918335
[3,5,9,15,39,99,345,22269,79809,187125,347979, 2171619,4219797675,98059918335]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 10 00:48 EST 2009. Contains 170565 sequences.
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