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A282024
as a simple table
n
a(n)
2
1
3
3
4
7
5
19
6
41
7
74
8
131
9
302
10
523
11
1031
12
2458
13
4132
14
8209
15
16381
16
32832
17
84614
18
131101
19
262139
[1,3,7,19,41,74,131,302,523,1031,2458,4132,8209, 16381,32832,84614,131101,262139]