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A174216 as a simple table

n a(n)
1 15
2 27
3 63
4 123
5 279
6 567
7 1143
8 2307
9 4623
10 9447
11 18927
12 38283
13 77139
14 154839
15 309747
16 620463
17 1241823
18 2483847
19 4967739
20 9935607
21 19892547
22 39785199 

[15,27,63,123,279,567,1143,2307,4623,9447,18927,
 38283,77139,154839,309747,620463,1241823,2483847,
 4967739,9935607,19892547,39785199]

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Last modified May 1 22:42 EDT 2024. Contains 372178 sequences. (Running on oeis4.)