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A147181 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 1
6 5
7 17
8 37
9 129
10 675
11 4545
12 33673
13 284663
14 3050875
15 41150087
16 686710451
17 13852947253
18 339116701643
19 10235218350849
20 379099740909573 

[1,1,1,1,1,5,17,37,129,675,4545,33673,284663,
 3050875,41150087,686710451,13852947253,
 339116701643,10235218350849,379099740909573]

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Last modified April 23 13:51 EDT 2024. Contains 371914 sequences. (Running on oeis4.)