A147435
formatted as a simple table:
n
a(n)
1
1
2
1
3
1
4
1
5
1
6
13
7
21
8
57
9
259
10
1017
11
4255
12
25913
13
160493
14
1488777
15
11698881
16
154711435
17
1737788683
18
30091739925
[1,1,1,1,1,13,21,57,259,1017,4255,25913,160493, 1488777,11698881,154711435,1737788683, 30091739925]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 16 17:18 EST 2009. Contains 170825 sequences.
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