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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 3 |
| 2 | 21 |
| 3 | 49 |
| 4 | 106 |
| 5 | 204 |
| 6 | 374 |
| 7 | 659 |
| 8 | 1133 |
| 9 | 1913 |
| 10 | 3190 |
| 11 | 5272 |
| 12 | 8658 |
| 13 | 14155 |
| 14 | 23069 |
| 15 | 37513 |
| 16 | 60906 |
| 17 | 98780 |
| 18 | 160086 |
| 19 | 259350 |
| 20 | 419965 |
| 21 | 679891 |
| 22 | 1100481 |
| 23 | 1781048 |
| 24 | 2882258 |
| 25 | 4664090 |
| 26 | 7547189 |
| 27 | 12212179 |
| 28 | 19760329 |
| 29 | 31973532 |
| 30 | 51734950 |
| 31 | 83709638 |
| 32 | 135445813 |
| 33 | 219156747 |
| 34 | 354603929 |
[2,3,21,49,106,204,374,659,1133,1913,3190,5272, 8658,14155,23069,37513,60906,98780,160086,259350, 419965,679891,1100481,1781048,2882258,4664090, 7547189,12212179,19760329,31973532,51734950, 83709638,135445813,219156747,354603929] |