A159801
formatted as a simple table:
n
a(n)
1
4
2
11
3
20
4
30
5
45
6
67
7
88
8
102
9
117
10
140
11
168
12
203
13
255
14
319
15
368
16
390
[4,11,20,30,45,67,88,102,117,140,168,203,255,319, 368,390]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.
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