A093990
formatted as a simple table:
n
a(n)
1
1
2
2
3
8
4
68
5
550
6
5404
7
54768
8
581868
9
6329407
10
70335294
11
794064734
[1,2,8,68,550,5404,54768,581868,6329407,70335294, 794064734]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 17 23:40 EST 2009. Contains 171025 sequences.
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