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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 10 |
| 3 | 121 |
| 4 | 1177 |
| 5 | 8232 |
| 6 | 43483 |
| 7 | 185051 |
| 8 | 666610 |
| 9 | 2105474 |
| 10 | 5980085 |
| 11 | 15560519 |
| 12 | 37618385 |
| 13 | 85418437 |
| 14 | 183739050 |
| 15 | 377000959 |
| 16 | 742024924 |
| 17 | 1407514167 |
| 18 | 2583094972 |
| 19 | 4601680965 |
| 20 | 7980089529 |
| 21 | 13504273038 |
| 22 | 22347278077 |
| 23 | 36230162235 |
| 24 | 57638635054 |
[1,10,121,1177,8232,43483,185051,666610,2105474, 5980085,15560519,37618385,85418437,183739050, 377000959,742024924,1407514167,2583094972, 4601680965,7980089529,13504273038,22347278077, 36230162235,57638635054] |