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A038080 as a simple table

n a(n)
0 1
1 3
2 3
3 9
4 39
5 189
6 981
7 5490
8 31674
9 189954
10 1170126
11 7382745
12 47494197
13 310712808
14 2061987642
15 13855192866
16 94113385437
17 645424668666
18 4464027720900
19 31110200069511
20 218292811705458
21 1541172223659249

[1,3,3,9,39,189,981,5490,31674,189954,1170126,
 7382745,47494197,310712808,2061987642,13855192866,
 94113385437,645424668666,4464027720900,
 31110200069511,218292811705458,1541172223659249]

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)