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A117107 as a simple table

n a(n)
1 1
2 1
3 3
4 12
5 57
6 304
7 1765
8 10943
9 71519
10 488186
11 3456526
12 25251479
13 189545179

[1,1,3,12,57,304,1765,10943,71519,488186,3456526,
 25251479,189545179]

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Last modified June 17 22:17 EDT 2019. Contains 324200 sequences. (Running on oeis4.)