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A129790 as a simple table

n a(n)
1 6
2 18
3 72
4 324
5 1556
6 7776
7 39991
8 209952
9 1119744
10 6046618
11 32981551
12 181398528
13 1004668771
14 5597440293
15 31345665639
16 176319369216
17 995685849691
18 5642219814912
19 32071565263711
20 182807922003149
21 1044616697160851

[6,18,72,324,1556,7776,39991,209952,1119744,
 6046618,32981551,181398528,1004668771,5597440293,
 31345665639,176319369216,995685849691,
 5642219814912,32071565263711,182807922003149,
 1044616697160851]

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Last modified August 6 10:24 EDT 2024. Contains 374969 sequences. (Running on oeis4.)