The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 25 |
| 3 | 24 |
| 4 | 39 |
| 5 | 57 |
| 6 | 87 |
| 7 | 145 |
| 8 | 241 |
| 9 | 397 |
| 10 | 669 |
| 11 | 1133 |
| 12 | 1909 |
| 13 | 3229 |
| 14 | 5477 |
| 15 | 9277 |
| 16 | 15717 |
| 17 | 26653 |
| 18 | 45189 |
| 19 | 76605 |
| 20 | 129893 |
| 21 | 220253 |
| 22 | 373445 |
| 23 | 633213 |
| 24 | 1073701 |
| 25 | 1820573 |
| 26 | 3086981 |
| 27 | 5234365 |
| 28 | 8875493 |
| 29 | 15049437 |
| 30 | 25518149 |
| 31 | 43269117 |
| 32 | 73367973 |
| 33 | 124404253 |
| 34 | 210942469 |
[4,25,24,39,57,87,145,241,397,669,1133,1909,3229, 5477,9277,15717,26653,45189,76605,129893,220253, 373445,633213,1073701,1820573,3086981,5234365, 8875493,15049437,25518149,43269117,73367973, 124404253,210942469] |