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A331043
as a simple table
n
a(n)
1
1
2
2
3
3
4
5
5
6
6
13
7
14
8
20
9
24
10
42
11
45
12
50
13
68
14
72
15
84
16
88
17
101
18
120
19
149
20
175
21
181
22
189
23
206
24
243
25
289
[1,2,3,5,6,13,14,20,24,42,45,50,68,72,84,88,101, 120,149,175,181,189,206,243,289]