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A147508 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 1
6 3
7 9
8 23
9 81
10 267
11 1053
12 6173
13 40853
14 301993
15 2684783
16 27089119
17 322029889
18 4723820567
19 81998776493
20 1660922956591
21 39864394187483
22 1124746291185333

[1,1,1,1,1,3,9,23,81,267,1053,6173,40853,301993,
 2684783,27089119,322029889,4723820567,81998776493,
 1660922956591,39864394187483,1124746291185333]

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Last modified May 21 11:28 EDT 2022. Contains 353908 sequences. (Running on oeis4.)