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A146380 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 1
6 13
7 27
8 135
9 527
10 2581
11 17899
12 176183
13 1596080
14 23232289
15 321756402
16 6986541337
17 150961652645
18 4812704574943
19 154830665386988 

[1,1,1,1,1,13,27,135,527,2581,17899,176183,
 1596080,23232289,321756402,6986541337,
 150961652645,4812704574943,154830665386988]

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Last modified April 23 20:33 EDT 2024. Contains 371916 sequences. (Running on oeis4.)