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A123222 as a simple table

n a(n)
1 1
2 3
3 9
4 31
5 109
6 391
7 1397
8 4995
9 17833
10 63675
11 227313
12 811543
13 2897269
14 10343647
15 36928061
16 131837979
17 470678161
18 1680380979
19 5999172633
20 21417807055
21 76464283837
22 272987183095
23 974598829637
24 3479441311347
25 12422046335161

[1,3,9,31,109,391,1397,4995,17833,63675,227313,
 811543,2897269,10343647,36928061,131837979,
 470678161,1680380979,5999172633,21417807055,
 76464283837,272987183095,974598829637,
 3479441311347,12422046335161]

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Last modified June 4 05:32 EDT 2024. Contains 373089 sequences. (Running on oeis4.)