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A190820 as a simple table

n a(n)
0 2
1 2
2 4
3 8
4 15
5 29
6 55
7 105
8 197
9 367
10 678
11 1261
12 2326
13 4293
14 7902
15 14431
16 26363
17 47899 

[2,2,4,8,15,29,55,105,197,367,678,1261,2326,4293,
 7902,14431,26363,47899]

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Last modified April 25 13:36 EDT 2024. Contains 371970 sequences. (Running on oeis4.)