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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 15 |
| 6 | 28 |
| 7 | 49 |
| 8 | 83 |
| 9 | 134 |
| 10 | 209 |
| 11 | 317 |
| 12 | 473 |
| 13 | 687 |
| 14 | 987 |
| 15 | 1403 |
| 16 | 1972 |
| 17 | 2732 |
| 18 | 3752 |
| 19 | 5096 |
| 20 | 6852 |
| 21 | 9144 |
| 22 | 12113 |
| 23 | 15919 |
| 24 | 20802 |
| 25 | 27012 |
| 26 | 34860 |
| 27 | 44755 |
| 28 | 57136 |
| 29 | 72592 |
| 30 | 91802 |
| 31 | 115567 |
| 32 | 144916 |
| 33 | 180963 |
[1,2,4,8,15,28,49,83,134,209,317,473,687,987,1403, 1972,2732,3752,5096,6852,9144,12113,15919,20802, 27012,34860,44755,57136,72592,91802,115567,144916, 180963] |