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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 5 |
| 3 | 13 |
| 4 | 35 |
| 5 | 94 |
| 6 | 252 |
| 7 | 678 |
| 8 | 1823 |
| 9 | 4900 |
| 10 | 13176 |
| 11 | 35427 |
| 12 | 95250 |
| 13 | 256105 |
| 14 | 688599 |
| 15 | 1851450 |
| 16 | 4978062 |
| 17 | 13384681 |
| 18 | 35987808 |
| 19 | 96761612 |
| 20 | 260166110 |
| 21 | 699517054 |
| 22 | 1880814358 |
| 23 | 5057006914 |
| 24 | 13596939262 |
| 25 | 36558534049 |
| 26 | 98296122593 |
| 27 | 264291989596 |
| 28 | 710610490247 |
| 29 | 1910641595588 |
[1,2,5,13,35,94,252,678,1823,4900,13176,35427, 95250,256105,688599,1851450,4978062,13384681, 35987808,96761612,260166110,699517054,1880814358, 5057006914,13596939262,36558534049,98296122593, 264291989596,710610490247,1910641595588] |