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A126923 as a simple table

n a(n)
0 1
1 33
2 561
3 6534
4 58542
5 429726
6 2688741
7 14734797
8 72139188
9 320292159
10 1304830527
11 4923228882
12 17335268874
13 57322733226
14 178956174243
15 529880976603
16 1494051617256
17 4025876961117
18 10400637791973
19 25836376187094
20 61877364279654
21 143225155573038

[1,33,561,6534,58542,429726,2688741,14734797,
 72139188,320292159,1304830527,4923228882,
 17335268874,57322733226,178956174243,529880976603,
 1494051617256,4025876961117,10400637791973,
 25836376187094,61877364279654,143225155573038]

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Last modified December 2 19:57 EST 2021. Contains 349445 sequences. (Running on oeis4.)