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A058334
as a simple table
n
a(n)
1
0
2
1
3
2
4
3
5
7
6
18
7
22
8
27
9
31
10
78
11
94
12
115
13
171
14
402
15
438
16
507
17
1363
18
1467
19
2263
20
2283
21
3627
22
9247
23
9955
[0,1,2,3,7,18,22,27,31,78,94,115,171,402,438,507, 1363,1467,2263,2283,3627,9247,9955]