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A290146 as a simple table

n a(n)
1 54
2 90
3 126
4 162
5 198
6 378
7 4950
8 12978
9 82278
10 94218606
11 8855754260391450
12 645856907610421353834
13 1350253136232108126126
14 27709820863862780667438

[54,90,126,162,198,378,4950,12978,82278,94218606,
 8855754260391450,645856907610421353834,
 1350253136232108126126,27709820863862780667438]

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Last modified April 23 01:19 EDT 2024. Contains 371906 sequences. (Running on oeis4.)