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A068940
as a simple table
n
a(n)
1
1
2
1
3
4
4
7
5
13
6
21
7
32
8
48
9
67
10
91
11
121
12
133
13
169
[1,1,4,7,13,21,32,48,67,91,121,133,169]
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Last modified April 18 08:14 EDT 2024. Contains 371769 sequences. (Running on oeis4.)