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A184068 as a simple table

n a(n)
1 81
2 225
3 1884
4 22452
5 288744
6 2663589
7 19694227
8 116690636
9 572683182
10 2305864084
11 7782298646
12 22382616957
13 56141874238
14 124734871342
15 249667791032
16 456693083041
17 773758373131
18 1229106077318
19 1850219475619
20 2663743231907

[81,225,1884,22452,288744,2663589,19694227,
 116690636,572683182,2305864084,7782298646,
 22382616957,56141874238,124734871342,249667791032,
 456693083041,773758373131,1229106077318,
 1850219475619,2663743231907]

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Last modified December 4 08:08 EST 2020. Contains 338921 sequences. (Running on oeis4.)