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A207591 as a simple table

n a(n)
1 9
2 81
3 144
4 432
5 1098
6 3150
7 8244
8 23202
9 61560
10 171468
11 458640
12 1269144
13 3412944
14 9402156
15 25378560
16 69694632
17 188620632
18 516830904
19 1401394608
20 3833746488
21 10409369472
22 28443841344
23 77305743936
24 211065666624
25 574042728672

[9,81,144,432,1098,3150,8244,23202,61560,171468,
 458640,1269144,3412944,9402156,25378560,69694632,
 188620632,516830904,1401394608,3833746488,
 10409369472,28443841344,77305743936,211065666624,
 574042728672]

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Last modified September 27 21:12 EDT 2021. Contains 347698 sequences. (Running on oeis4.)