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A147488
as a simple table
n
a(n)
1
1
2
1
3
1
4
1
5
1
6
5
7
20
8
49
9
167
10
643
11
3053
12
16577
13
118904
14
896633
15
8867027
16
91561000
17
1224859380
18
17454229913
[1,1,1,1,1,5,20,49,167,643,3053,16577,118904, 896633,8867027,91561000,1224859380,17454229913]
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Last modified March 28 07:20 EDT 2024. Contains 371235 sequences. (Running on oeis4.)