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A207962 as a simple table

n a(n)
1 9
2 81
3 297
4 989
5 3080
6 9994
7 32358
8 104176
9 335940
10 1083914
11 3495930
12 11275444
13 36368274
14 117303034
15 378351488
16 1220339904
17 3936101206
18 12695569864
19 40948497182
20 132075911156
21 425999751988
22 1374026441136
23 4431806698176

[9,81,297,989,3080,9994,32358,104176,335940,
 1083914,3495930,11275444,36368274,117303034,
 378351488,1220339904,3936101206,12695569864,
 40948497182,132075911156,425999751988,
 1374026441136,4431806698176]

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Last modified September 10 01:04 EDT 2024. Contains 375769 sequences. (Running on oeis4.)