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A273503 as a simple table

n a(n)
0 1
1 5
2 17
3 61
4 221
5 793
6 2761
7 11153
8 43561
9 174765
10 695393
11 2770901
12 11045381
13 44187869
14 176521361
15 706067621

[1,5,17,61,221,793,2761,11153,43561,174765,695393,
 2770901,11045381,44187869,176521361,706067621]

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Last modified March 28 20:44 EDT 2020. Contains 333103 sequences. (Running on oeis4.)