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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 7 |
| 5 | 21 |
| 6 | 49 |
| 7 | 85 |
| 8 | 253 |
| 9 | 442 |
| 10 | 766 |
| 11 | 1327 |
| 12 | 2299 |
| 13 | 3982 |
| 14 | 11839 |
| 15 | 20506 |
| 16 | 35518 |
| 17 | 61519 |
| 18 | 184557 |
| 19 | 553645 |
| 20 | 966928 |
| 21 | 1674769 |
| 22 | 2900785 |
| 23 | 8701141 |
| 24 | 25877593 |
| 25 | 44821306 |
| 26 | 77676682 |
| 27 | 134539960 |
| 28 | 402368674 |
| 29 | 696922987 |
| 30 | 1207106023 |
| 31 | 2090768962 |
| 32 | 3632578906 |
[1,2,4,7,21,49,85,253,442,766,1327,2299,3982, 11839,20506,35518,61519,184557,553645,966928, 1674769,2900785,8701141,25877593,44821306, 77676682,134539960,402368674,696922987,1207106023, 2090768962,3632578906] |