A136403
formatted as a simple table:
n
a(n)
1
4
2
8
3
15
4
20
5
24
6
35
7
39
8
40
9
51
10
52
11
55
12
56
13
68
[4,8,15,20,24,35,39,40,51,52,55,56,68]
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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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