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A273393 as a simple table

n a(n)
0 1
1 5
2 21
3 81
4 293
5 1237
6 5685
7 26093
8 108421
9 432245
10 1706365
11 6761333
12 26898301
13 107280245
14 428476285
15 1712596853

[1,5,21,81,293,1237,5685,26093,108421,432245,
 1706365,6761333,26898301,107280245,428476285,
 1712596853]

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Last modified May 25 15:01 EDT 2024. Contains 372791 sequences. (Running on oeis4.)