The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 15 |
| 3 | 36 |
| 4 | 76 |
| 5 | 148 |
| 6 | 273 |
| 7 | 485 |
| 8 | 839 |
| 9 | 1424 |
| 10 | 2384 |
| 11 | 3952 |
| 12 | 6505 |
| 13 | 10653 |
| 14 | 17383 |
| 15 | 28292 |
| 16 | 45964 |
| 17 | 74580 |
| 18 | 120905 |
| 19 | 195885 |
| 20 | 317231 |
| 21 | 513600 |
| 22 | 831360 |
| 23 | 1345536 |
| 24 | 2177521 |
| 25 | 3523733 |
| 26 | 5701983 |
| 27 | 9226500 |
| 28 | 14929324 |
| 29 | 24156724 |
| 30 | 39087009 |
| 31 | 63244757 |
| 32 | 102332855 |
| 33 | 165578768 |
| 34 | 267912848 |
[1,5,15,36,76,148,273,485,839,1424,2384,3952,6505, 10653,17383,28292,45964,74580,120905,195885, 317231,513600,831360,1345536,2177521,3523733, 5701983,9226500,14929324,24156724,39087009, 63244757,102332855,165578768,267912848] |