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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 7 |
| 7 | 11 |
| 8 | 20 |
| 9 | 34 |
| 10 | 65 |
| 11 | 113 |
| 12 | 197 |
| 13 | 315 |
| 14 | 488 |
| 15 | 685 |
| 16 | 1002 |
| 17 | 1409 |
| 18 | 2019 |
| 19 | 2679 |
| 20 | 3667 |
| 21 | 4837 |
| 22 | 6558 |
| 23 | 8474 |
| 24 | 11018 |
| 25 | 13786 |
| 26 | 17882 |
| 27 | 22431 |
| 28 | 28918 |
| 29 | 36411 |
| 30 | 46905 |
| 31 | 59183 |
| 32 | 76343 |
| 33 | 96372 |
| 34 | 123464 |
| 35 | 153738 |
| 36 | 193710 |
| 37 | 237629 |
| 38 | 294513 |
| 39 | 357010 |
| 40 | 436593 |
[1,1,1,2,3,7,11,20,34,65,113,197,315,488,685,1002, 1409,2019,2679,3667,4837,6558,8474,11018,13786, 17882,22431,28918,36411,46905,59183,76343,96372, 123464,153738,193710,237629,294513,357010,436593] |