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A059097
as a simple table
n
a(n)
1
0
2
1
3
2
4
3
5
4
6
6
7
7
8
9
9
10
10
11
11
12
12
21
13
22
14
28
15
29
16
30
17
31
18
36
19
37
20
54
21
55
22
57
23
58
24
110
25
171
26
784
27
786
[0,1,2,3,4,6,7,9,10,11,12,21,22,28,29,30,31,36,37, 54,55,57,58,110,171,784,786]