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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 11 |
| 5 | 18 |
| 6 | 31 |
| 7 | 48 |
| 8 | 76 |
| 9 | 118 |
| 10 | 184 |
| 11 | 279 |
| 12 | 426 |
| 13 | 641 |
| 14 | 966 |
| 15 | 1448 |
| 16 | 2163 |
| 17 | 3228 |
| 18 | 4805 |
| 19 | 7137 |
| 20 | 10586 |
| 21 | 15681 |
| 22 | 23198 |
| 23 | 34278 |
| 24 | 50606 |
| 25 | 74632 |
| 26 | 109987 |
| 27 | 161954 |
| 28 | 238312 |
| 29 | 350432 |
| 30 | 514999 |
| 31 | 756407 |
| 32 | 1110391 |
| 33 | 1629219 |
| 34 | 2389346 |
| 35 | 3502578 |
| 36 | 5132354 |
| 37 | 7517523 |
| 38 | 11007078 |
| 39 | 16110784 |
| 40 | 23573102 |
| 41 | 34480937 |
| 42 | 50420909 |
[1,3,6,11,18,31,48,76,118,184,279,426,641,966, 1448,2163,3228,4805,7137,10586,15681,23198,34278, 50606,74632,109987,161954,238312,350432,514999, 756407,1110391,1629219,2389346,3502578,5132354, 7517523,11007078,16110784,23573102,34480937, 50420909] |