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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 9 |
| 3 | 17 |
| 4 | 30 |
| 5 | 52 |
| 6 | 88 |
| 7 | 145 |
| 8 | 237 |
| 9 | 386 |
| 10 | 628 |
| 11 | 1020 |
| 12 | 1653 |
| 13 | 2677 |
| 14 | 4334 |
| 15 | 7016 |
| 16 | 11356 |
| 17 | 18377 |
| 18 | 29737 |
| 19 | 48118 |
| 20 | 77860 |
| 21 | 125984 |
| 22 | 203849 |
| 23 | 329837 |
| 24 | 533690 |
| 25 | 863532 |
| 26 | 1397228 |
| 27 | 2260765 |
| 28 | 3657997 |
| 29 | 5918766 |
| 30 | 9576768 |
| 31 | 15495540 |
| 32 | 25072313 |
| 33 | 40567857 |
| 34 | 65640174 |
| 35 | 106208036 |
| 36 | 171848216 |
[1,4,9,17,30,52,88,145,237,386,628,1020,1653,2677, 4334,7016,11356,18377,29737,48118,77860,125984, 203849,329837,533690,863532,1397228,2260765, 3657997,5918766,9576768,15495540,25072313, 40567857,65640174,106208036,171848216] |