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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 24 |
| 3 | 297 |
| 4 | 1046 |
| 5 | 3460 |
| 6 | 10790 |
| 7 | 32692 |
| 8 | 96454 |
| 9 | 279958 |
| 10 | 801574 |
| 11 | 2269012 |
| 12 | 6364810 |
| 13 | 17720024 |
| 14 | 49016062 |
| 15 | 134841796 |
| 16 | 369185826 |
| 17 | 1006589456 |
| 18 | 2734396414 |
| 19 | 7403739804 |
| 20 | 19988032370 |
| 21 | 53820207056 |
| 22 | 144572702206 |
| 23 | 387513485500 |
| 24 | 1036641811138 |
[1,24,297,1046,3460,10790,32692,96454,279958, 801574,2269012,6364810,17720024,49016062, 134841796,369185826,1006589456,2734396414, 7403739804,19988032370,53820207056,144572702206, 387513485500,1036641811138] |