The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 10 |
| 5 | 19 |
| 6 | 37 |
| 7 | 74 |
| 8 | 148 |
| 9 | 296 |
| 10 | 592 |
| 11 | 1183 |
| 12 | 2365 |
| 13 | 4729 |
| 14 | 9458 |
| 15 | 18915 |
| 16 | 37829 |
| 17 | 75657 |
| 18 | 151314 |
| 19 | 302628 |
| 20 | 605255 |
| 21 | 1210509 |
| 22 | 2421018 |
| 23 | 4842036 |
| 24 | 9684072 |
| 25 | 19368144 |
| 26 | 38736288 |
| 27 | 77472576 |
| 28 | 154945151 |
| 29 | 309890301 |
| 30 | 619780601 |
| 31 | 1239561202 |
| 32 | 2479122404 |
| 33 | 4958244807 |
| 34 | 9916489614 |
[1,2,3,5,10,19,37,74,148,296,592,1183,2365,4729, 9458,18915,37829,75657,151314,302628,605255, 1210509,2421018,4842036,9684072,19368144,38736288, 77472576,154945151,309890301,619780601,1239561202, 2479122404,4958244807,9916489614] |