The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 133 |
| 2 | 214 |
| 3 | 344 |
| 4 | 572 |
| 5 | 996 |
| 6 | 1812 |
| 7 | 3412 |
| 8 | 6580 |
| 9 | 12884 |
| 10 | 25460 |
| 11 | 50580 |
| 12 | 100788 |
| 13 | 201172 |
| 14 | 401908 |
| 15 | 803348 |
| 16 | 1606196 |
| 17 | 3211860 |
| 18 | 6423156 |
| 19 | 12845716 |
| 20 | 25690804 |
| 21 | 51380948 |
| 22 | 102761204 |
| 23 | 205521684 |
| 24 | 411042612 |
| 25 | 822084436 |
| 26 | 1644168052 |
| 27 | 3288335252 |
[133,214,344,572,996,1812,3412,6580,12884,25460, 50580,100788,201172,401908,803348,1606196,3211860, 6423156,12845716,25690804,51380948,102761204, 205521684,411042612,822084436,1644168052, 3288335252] |