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A146688
as a simple table
n
a(n)
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
15
9
35
10
63
11
133
12
361
13
1225
14
3603
15
14173
16
68577
17
327107
18
1804859
19
9535581
20
56798795
21
377223653
[1,1,1,1,1,1,1,15,35,63,133,361,1225,3603,14173, 68577,327107,1804859,9535581,56798795,377223653]
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Last modified May 16 02:54 EDT 2024. Contains 372549 sequences. (Running on oeis4.)