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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 6 |
| 4 | 10 |
| 5 | 18 |
| 6 | 29 |
| 7 | 48 |
| 8 | 75 |
| 9 | 118 |
| 10 | 179 |
| 11 | 272 |
| 12 | 403 |
| 13 | 596 |
| 14 | 865 |
| 15 | 1252 |
| 16 | 1786 |
| 17 | 2538 |
| 18 | 3566 |
| 19 | 4990 |
| 20 | 6918 |
| 21 | 9552 |
| 22 | 13086 |
| 23 | 17856 |
| 24 | 24205 |
| 25 | 32684 |
| 26 | 43881 |
| 27 | 58698 |
| 28 | 78125 |
| 29 | 103618 |
| 30 | 136820 |
| 31 | 180064 |
| 32 | 236031 |
| 33 | 308432 |
| 34 | 401585 |
| 35 | 521340 |
| 36 | 674579 |
| 37 | 870446 |
| 38 | 1119786 |
| 39 | 1436798 |
| 40 | 1838405 |
| 41 | 2346480 |
| 42 | 2987204 |
[1,2,3,6,10,18,29,48,75,118,179,272,403,596,865, 1252,1786,2538,3566,4990,6918,9552,13086,17856, 24205,32684,43881,58698,78125,103618,136820, 180064,236031,308432,401585,521340,674579,870446, 1119786,1436798,1838405,2346480,2987204] |