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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 6 |
| 3 | 11 |
| 4 | 23 |
| 5 | 44 |
| 6 | 92 |
| 7 | 178 |
| 8 | 370 |
| 9 | 719 |
| 10 | 1487 |
| 11 | 2897 |
| 12 | 5969 |
| 13 | 11651 |
| 14 | 22223 |
| 15 | 45083 |
| 16 | 89516 |
| 17 | 181385 |
| 18 | 353683 |
| 19 | 722589 |
| 20 | 1423078 |
| 21 | 2903564 |
| 22 | 5696576 |
| 23 | 11635316 |
| 24 | 22866150 |
| 25 | 46704206 |
| 26 | 91835554 |
| 27 | 187298550 |
[3,6,11,23,44,92,178,370,719,1487,2897,5969,11651, 22223,45083,89516,181385,353683,722589,1423078, 2903564,5696576,11635316,22866150,46704206, 91835554,187298550] |