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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 12 |
| 5 | 12 |
| 6 | 22 |
| 7 | 33 |
| 8 | 63 |
| 9 | 103 |
| 10 | 156 |
| 11 | 264 |
| 12 | 408 |
| 13 | 669 |
| 14 | 1075 |
| 15 | 1733 |
| 16 | 2792 |
| 17 | 4540 |
| 18 | 7350 |
| 19 | 11877 |
| 20 | 19207 |
| 21 | 31095 |
| 22 | 50312 |
| 23 | 81384 |
| 24 | 131704 |
| 25 | 213097 |
| 26 | 344779 |
| 27 | 557885 |
| 28 | 902676 |
| 29 | 1460532 |
| 30 | 2363198 |
| 31 | 3823721 |
| 32 | 6186887 |
| 33 | 10010575 |
| 34 | 16197492 |
| 35 | 26208096 |
| 36 | 42405552 |
| 37 | 68613621 |
| 38 | 111019147 |
| 39 | 179632733 |
[0,1,3,5,12,12,22,33,63,103,156,264,408,669,1075, 1733,2792,4540,7350,11877,19207,31095,50312,81384, 131704,213097,344779,557885,902676,1460532, 2363198,3823721,6186887,10010575,16197492, 26208096,42405552,68613621,111019147,179632733] |