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A129796 as a simple table

n a(n)
1 6
2 18
3 72
4 324
5 1555
6 7776
7 39990
8 209952
9 1119744
10 6046617
11 32981550
12 181398528
13 1004668770
14 5597440292
15 31345665638
16 176319369216
17 995685849690
18 5642219814912
19 32071565263710
20 182807922003148
21 1044616697160850

[6,18,72,324,1555,7776,39990,209952,1119744,
 6046617,32981550,181398528,1004668770,5597440292,
 31345665638,176319369216,995685849690,
 5642219814912,32071565263710,182807922003148,
 1044616697160850]

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Last modified April 25 05:18 EDT 2024. Contains 371964 sequences. (Running on oeis4.)