A117538
formatted as a simple table:
n
a(n)
0
2
1
5
2
7
3
12
4
19
5
31
6
41
7
53
8
72
9
130
10
171
11
224
12
270
[2,5,7,12,19,31,41,53,72,130,171,224,270]
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(
njas@research.att.com
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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.
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