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A091637 as a simple table

n a(n)
1 3
2 16
3 102
4 668
5 4715
6 34813
7 265015
8 2067152
9 16413535
10 132200223
11 1076692515
12 8849480283
13 73288053795
14 610860050965

[3,16,102,668,4715,34813,265015,2067152,16413535,
 132200223,1076692515,8849480283,73288053795,
 610860050965]

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Last modified April 16 04:17 EDT 2024. Contains 371696 sequences. (Running on oeis4.)