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A147273 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 21
10 41
11 79
12 171
13 645
14 1743
15 5843
16 17953
17 98853
18 402491
19 2708743
20 12396159 

[1,1,1,1,1,1,1,1,21,41,79,171,645,1743,5843,17953,
 98853,402491,2708743,12396159]

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Last modified April 19 23:15 EDT 2024. Contains 371798 sequences. (Running on oeis4.)