A087631
formatted as a simple table:
n
a(n)
0
1
1
6
2
35
3
268
4
2092
5
17263
6
146565
7
1274244
8
11272025
9
101053126
[1,6,35,268,2092,17263,146565,1274244,11272025, 101053126]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 3 22:15 EST 2009. Contains 170310 sequences.
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