A001253
formatted as a simple table:
n
a(n)
5
2
6
20
7
198
8
2048
9
22468
10
264538
11
3340962
12
45173518
13
652197968
14
10024549190
[2,20,198,2048,22468,264538,3340962,45173518, 652197968,10024549190]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 15 00:47 EST 2009. Contains 170825 sequences.
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