The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 5 |
| 4 | 14 |
| 5 | 34 |
| 6 | 72 |
| 7 | 141 |
| 8 | 261 |
| 9 | 465 |
| 10 | 806 |
| 11 | 1370 |
| 12 | 2296 |
| 13 | 3809 |
| 14 | 6273 |
| 15 | 10277 |
| 16 | 16774 |
| 17 | 27306 |
| 18 | 44368 |
| 19 | 71997 |
| 20 | 116725 |
| 21 | 189121 |
| 22 | 306286 |
| 23 | 495890 |
| 24 | 802704 |
| 25 | 1299169 |
| 26 | 2102497 |
| 27 | 3402341 |
| 28 | 5505566 |
| 29 | 8908690 |
| 30 | 14415096 |
| 31 | 23324685 |
| 32 | 37740741 |
| 33 | 61066449 |
| 34 | 98808278 |
[0,1,1,5,14,34,72,141,261,465,806,1370,2296,3809, 6273,10277,16774,27306,44368,71997,116725,189121, 306286,495890,802704,1299169,2102497,3402341, 5505566,8908690,14415096,23324685,37740741, 61066449,98808278] |