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A146819 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 3
9 9
10 19
11 39
12 117
13 351
14 957
15 3341
16 15997
17 83175
18 424759
19 2415699
20 15982837
21 113541201
22 873618675

[1,1,1,1,1,1,1,3,9,19,39,117,351,957,3341,15997,
 83175,424759,2415699,15982837,113541201,873618675]

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Last modified June 28 04:00 EDT 2022. Contains 354903 sequences. (Running on oeis4.)