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A273345 as a simple table

n a(n)
2 0
3 1
4 2
5 7
6 23
7 75
8 245
9 801
10 2622
11 8595
12 28215
13 92751
14 305304
15 1006207
16 3320071
17 10966741
18 36261414
19 120010103
20 397528422
21 1317860989
22 4372180109
23 14515485973
24 48222552640
25 160300772873
26 533176676911
27 1774359032599
28 5907894024527
29 19680307851415
30 65588436120988
31 218679463049627

[0,1,2,7,23,75,245,801,2622,8595,28215,92751,
 305304,1006207,3320071,10966741,36261414,
 120010103,397528422,1317860989,4372180109,
 14515485973,48222552640,160300772873,533176676911,
 1774359032599,5907894024527,19680307851415,
 65588436120988,218679463049627]

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Last modified April 23 06:45 EDT 2024. Contains 371906 sequences. (Running on oeis4.)