The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 4 |
| 2 | 7 |
| 3 | 14 |
| 4 | 19 |
| 5 | 34 |
| 6 | 63 |
| 7 | 76 |
| 8 | 137 |
| 9 | 248 |
| 10 | 282 |
| 11 | 502 |
| 12 | 891 |
| 13 | 980 |
| 14 | 1718 |
| 15 | 3000 |
| 16 | 3233 |
| 17 | 5594 |
| 18 | 9646 |
| 19 | 10256 |
| 20 | 17565 |
| 21 | 30000 |
| 22 | 31597 |
| 23 | 53690 |
| 24 | 91033 |
| 25 | 95214 |
| 26 | 160803 |
| 27 | 271108 |
| 28 | 282054 |
| 29 | 474060 |
| 30 | 795677 |
| 31 | 824334 |
| 32 | 1380142 |
| 33 | 2308114 |
| 34 | 2383139 |
| 35 | 3977364 |
| 36 | 6631898 |
| 37 | 6828316 |
| 38 | 11366227 |
[2,4,7,14,19,34,63,76,137,248,282,502,891,980, 1718,3000,3233,5594,9646,10256,17565,30000,31597, 53690,91033,95214,160803,271108,282054,474060, 795677,824334,1380142,2308114,2383139,3977364, 6631898,6828316,11366227] |