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A051177
as a simple table
n
a(n)
1
1
2
2
3
3
4
124
5
158
6
342
7
693
8
1896
9
3853
10
4434
11
5273
12
8640
13
14850
14
17928
15
110516
16
178984
17
274534
[1,2,3,124,158,342,693,1896,3853,4434,5273,8640, 14850,17928,110516,178984,274534]