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A147121 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 7
9 23
10 49
11 87
12 207
13 721
14 2133
15 8229
16 34269
17 162105
18 830967
19 4627991
20 26390809
21 175258607 

[1,1,1,1,1,1,1,7,23,49,87,207,721,2133,8229,34269,
 162105,830967,4627991,26390809,175258607]

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Last modified April 25 06:14 EDT 2024. Contains 371964 sequences. (Running on oeis4.)