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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 10 |
| 5 | 25 |
| 6 | 70 |
| 7 | 190 |
| 8 | 471 |
| 9 | 1060 |
| 10 | 2189 |
| 11 | 4203 |
| 12 | 7592 |
| 13 | 13027 |
| 14 | 21400 |
| 15 | 33868 |
| 16 | 51901 |
| 17 | 77334 |
| 18 | 112423 |
| 19 | 159905 |
| 20 | 223062 |
| 21 | 305789 |
| 22 | 412666 |
| 23 | 549034 |
| 24 | 721075 |
| 25 | 935896 |
| 26 | 1201617 |
| 27 | 1527463 |
| 28 | 1923860 |
| 29 | 2402535 |
| 30 | 2976620 |
| 31 | 3660760 |
| 32 | 4471225 |
| 33 | 5426026 |
[2,3,5,10,25,70,190,471,1060,2189,4203,7592,13027, 21400,33868,51901,77334,112423,159905,223062, 305789,412666,549034,721075,935896,1201617, 1527463,1923860,2402535,2976620,3660760,4471225, 5426026] |