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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 14 |
| 5 | 283 |
| 6 | 1146 |
| 7 | 1429 |
| 8 | 2575 |
| 9 | 4004 |
| 10 | 242815 |
| 11 | 246819 |
| 12 | 489634 |
| 13 | 736453 |
| 14 | 3435446 |
| 15 | 69445373 |
| 16 | 281216938 |
| 17 | 350662311 |
| 18 | 631879249 |
| 19 | 982541560 |
| 20 | 59584372849 |
| 21 | 60566914409 |
| 22 | 120151287258 |
| 23 | 180718201667 |
| 24 | 843024093926 |
| 25 | 17041200080187 |
[1,1,2,3,14,283,1146,1429,2575,4004,242815,246819, 489634,736453,3435446,69445373,281216938, 350662311,631879249,982541560,59584372849, 60566914409,120151287258,180718201667, 843024093926,17041200080187] |