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A034223
as a simple table
n
a(n)
1
1
2
4
3
10
4
20
5
35
6
57
7
87
8
127
9
179
10
245
11
327
12
428
13
550
14
696
15
869
[1,4,10,20,35,57,87,127,179,245,327,428,550,696, 869]