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| n | a(n) |
|---|---|
| 1 | 14 |
| 2 | 196 |
| 3 | 966 |
| 4 | 4761 |
| 5 | 16284 |
| 6 | 55696 |
| 7 | 154580 |
| 8 | 429025 |
| 9 | 1033590 |
| 10 | 2490084 |
| 11 | 5404650 |
| 12 | 11730625 |
| 13 | 23481800 |
| 14 | 47004736 |
| 15 | 88175016 |
| 16 | 165405321 |
| 17 | 294131070 |
| 18 | 523036900 |
| 19 | 889299950 |
| 20 | 1512043225 |
| 21 | 2474485860 |
| 22 | 4049540496 |
| 23 | 6412154268 |
| 24 | 10153182169 |
[14,196,966,4761,16284,55696,154580,429025, 1033590,2490084,5404650,11730625,23481800, 47004736,88175016,165405321,294131070,523036900, 889299950,1512043225,2474485860,4049540496, 6412154268,10153182169] |