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A074977
as a simple table
n
a(n)
1
1
2
10
3
55
4
161
5
209
6
551
7
649
8
1079
9
1189
10
3401
11
6049
12
6319
13
9701
14
12151
15
14279
[1,10,55,161,209,551,649,1079,1189,3401,6049,6319, 9701,12151,14279]