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A090745
as a simple table
n
a(n)
1
1
2
2
3
3
4
5
5
6
6
7
7
16
8
17
9
18
10
104
11
127
12
213
13
1143
14
4654
15
4897
16
17046
17
33424
18
47407
[1,2,3,5,6,7,16,17,18,104,127,213,1143,4654,4897, 17046,33424,47407]