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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 14 |
| 3 | 46 |
| 4 | 160 |
| 5 | 574 |
| 6 | 2100 |
| 7 | 7788 |
| 8 | 29172 |
| 9 | 110110 |
| 10 | 418132 |
| 11 | 1595620 |
| 12 | 6113744 |
| 13 | 23505356 |
| 14 | 90633800 |
| 15 | 350351640 |
| 16 | 1357278300 |
| 17 | 5268292830 |
| 18 | 20483876820 |
| 19 | 79765662900 |
| 20 | 311038321440 |
| 21 | 1214362277700 |
| 22 | 4746455801880 |
| 23 | 18570960418920 |
| 24 | 72728638093800 |
[5,14,46,160,574,2100,7788,29172,110110,418132, 1595620,6113744,23505356,90633800,350351640, 1357278300,5268292830,20483876820,79765662900, 311038321440,1214362277700,4746455801880, 18570960418920,72728638093800] |