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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 6 |
| 4 | 10 |
| 5 | 26 |
| 6 | 34 |
| 7 | 103 |
| 8 | 175 |
| 9 | 393 |
| 10 | 599 |
| 11 | 2015 |
| 12 | 2551 |
| 13 | 8681 |
| 14 | 14254 |
| 15 | 19620 |
| 16 | 34700 |
| 17 | 129557 |
| 18 | 161272 |
| 19 | 595304 |
| 20 | 695175 |
| 21 | 1094164 |
| 22 | 1903859 |
| 23 | 7654850 |
| 24 | 9413484 |
| 25 | 29625309 |
[1,2,3,6,10,26,34,103,175,393,599,2015,2551,8681, 14254,19620,34700,129557,161272,595304,695175, 1094164,1903859,7654850,9413484,29625309] |