A120094
formatted as a simple table:
n
a(n)
0
7
1
15
2
31
3
63
4
81
5
127
6
239
7
255
8
470
9
511
[7,15,31,63,81,127,239,255,470,511]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 9 14:43 EST 2009. Contains 170430 sequences.
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