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A300120
as a simple table
n
a(n)
1
2
2
6
3
12
4
26
5
44
6
86
7
136
8
239
9
376
10
613
11
930
12
1485
13
2194
14
3355
15
4948
16
7372
17
10656
18
15660
19
22359
20
32308
[2,6,12,26,44,86,136,239,376,613,930,1485,2194, 3355,4948,7372,10656,15660,22359,32308]