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A196691 as a simple table

n a(n)
1 3
2 11
3 76
4 408
5 2025
6 10548
7 55431
8 289038
9 1506376
10 7857827
11 40992713
12 213825921
13 1115337571
14 5817828688
15 30347027526
16 158296067515
17 825703442256
18 4307033134922
19 22466340292902
20 117188887827705
21 611280485474823

[3,11,76,408,2025,10548,55431,289038,1506376,
 7857827,40992713,213825921,1115337571,5817828688,
 30347027526,158296067515,825703442256,
 4307033134922,22466340292902,117188887827705,
 611280485474823]

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Last modified February 21 05:22 EST 2020. Contains 332086 sequences. (Running on oeis4.)