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A273759 as a simple table

n a(n)
0 1
1 5
2 17
3 61
4 233
5 777
6 3133
7 11981
8 49189
9 197057
10 773745
11 3091785
12 12357309
13 49416725
14 197553769
15 790272697

[1,5,17,61,233,777,3133,11981,49189,197057,773745,
 3091785,12357309,49416725,197553769,790272697]

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Last modified May 25 19:30 EDT 2020. Contains 334595 sequences. (Running on oeis4.)