A138769
formatted as a simple table:
n
a(n)
1
1
2
3
3
9
4
33
5
201
6
1125
7
5259
8
98481
9
1176579
10
4970985
11
83471355
12
607500315
[1,3,9,33,201,1125,5259,98481,1176579,4970985, 83471355,607500315]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 19 12:50 EST 2009. Contains 171053 sequences.
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