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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 3 |
| 2 | 4 |
| 3 | 6 |
| 4 | 10 |
| 5 | 15 |
| 6 | 22 |
| 7 | 34 |
| 8 | 51 |
| 9 | 76 |
| 10 | 115 |
| 11 | 172 |
| 12 | 259 |
| 13 | 389 |
| 14 | 583 |
| 15 | 875 |
| 16 | 1313 |
| 17 | 1970 |
| 18 | 2955 |
| 19 | 4433 |
| 20 | 6650 |
| 21 | 9975 |
| 22 | 14963 |
| 23 | 22445 |
| 24 | 33668 |
| 25 | 50502 |
| 26 | 75753 |
| 27 | 113630 |
| 28 | 170445 |
| 29 | 255668 |
| 30 | 383502 |
| 31 | 575253 |
| 32 | 862879 |
| 33 | 1294319 |
| 34 | 1941479 |
| 35 | 2912219 |
| 36 | 4368328 |
| 37 | 6552493 |
| 38 | 9828739 |
| 39 | 14743109 |
[2,3,4,6,10,15,22,34,51,76,115,172,259,389,583, 875,1313,1970,2955,4433,6650,9975,14963,22445, 33668,50502,75753,113630,170445,255668,383502, 575253,862879,1294319,1941479,2912219,4368328, 6552493,9828739,14743109] |