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A161954 as a simple table

n a(n)
0 1
1 27
2 377
3 3627
4 27026
5 166230
6 878409
7 4098483
8 17222607
9 66165501
10 235124461
11 780112671
12 2435132466
13 7196829486
14 20245295242
15 54455027238
16 140596223184
17 349621224120
18 839832229131
19 1953829030737
20 4412447681628
21 9693085025844

[1,27,377,3627,27026,166230,878409,4098483,
 17222607,66165501,235124461,780112671,2435132466,
 7196829486,20245295242,54455027238,140596223184,
 349621224120,839832229131,1953829030737,
 4412447681628,9693085025844]

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Last modified March 29 04:22 EDT 2024. Contains 371264 sequences. (Running on oeis4.)