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A146853 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 1
6 1
7 3
8 15
9 39
10 71
11 173
12 597
13 1851
14 6753
15 30359
16 143255
17 790071
18 4528523
19 29159423
20 204966875
21 1600354339

[1,1,1,1,1,1,3,15,39,71,173,597,1851,6753,30359,
 143255,790071,4528523,29159423,204966875,
 1600354339]

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Last modified March 29 07:27 EDT 2024. Contains 371265 sequences. (Running on oeis4.)