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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 4 |
| 4 | 6 |
| 5 | 9 |
| 6 | 15 |
| 7 | 21 |
| 8 | 36 |
| 9 | 49 |
| 10 | 84 |
| 11 | 115 |
| 12 | 199 |
| 13 | 272 |
| 14 | 471 |
| 15 | 643 |
| 16 | 1113 |
| 17 | 1521 |
| 18 | 2634 |
| 19 | 3598 |
| 20 | 6231 |
| 21 | 8512 |
| 22 | 14743 |
| 23 | 20139 |
| 24 | 34881 |
| 25 | 47649 |
| 26 | 82530 |
| 27 | 112738 |
| 28 | 195267 |
| 29 | 266740 |
| 30 | 462007 |
| 31 | 631113 |
| 32 | 1093119 |
| 33 | 1493229 |
| 34 | 2586348 |
| 35 | 3533017 |
| 36 | 6119364 |
| 37 | 8359207 |
| 38 | 14478571 |
[1,2,3,4,6,9,15,21,36,49,84,115,199,272,471,643, 1113,1521,2634,3598,6231,8512,14743,20139,34881, 47649,82530,112738,195267,266740,462007,631113, 1093119,1493229,2586348,3533017,6119364,8359207, 14478571] |