The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 3 |
| 1 | 6 |
| 2 | 11 |
| 3 | 21 |
| 4 | 42 |
| 5 | 84 |
| 6 | 168 |
| 7 | 336 |
| 8 | 671 |
| 9 | 1341 |
| 10 | 2681 |
| 11 | 5362 |
| 12 | 10724 |
| 13 | 21447 |
| 14 | 42894 |
| 15 | 85788 |
| 16 | 171576 |
| 17 | 343151 |
| 18 | 686302 |
| 19 | 1372604 |
| 20 | 2745208 |
| 21 | 5490416 |
| 22 | 10980831 |
| 23 | 21961661 |
| 24 | 43923322 |
| 25 | 87846644 |
| 26 | 175693287 |
| 27 | 351386574 |
| 28 | 702773148 |
| 29 | 1405546296 |
| 30 | 2811092591 |
| 31 | 5622185181 |
| 32 | 11244370362 |
[3,6,11,21,42,84,168,336,671,1341,2681,5362,10724, 21447,42894,85788,171576,343151,686302,1372604, 2745208,5490416,10980831,21961661,43923322, 87846644,175693287,351386574,702773148,1405546296, 2811092591,5622185181,11244370362] |