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A146681 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 1
6 9
7 21
8 93
9 334
10 1347
11 5976
12 45869
13 290540
14 3087921
15 28902351
16 440901387
17 5686714599 

[1,1,1,1,1,9,21,93,334,1347,5976,45869,290540,
 3087921,28902351,440901387,5686714599]

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Last modified August 6 05:10 EDT 2024. Contains 374957 sequences. (Running on oeis4.)