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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 312 |
| 2 | 11466 |
| 3 | 116688 |
| 4 | 535704 |
| 5 | 1899664 |
| 6 | 5043376 |
| 7 | 12066912 |
| 8 | 24443978 |
| 9 | 48210760 |
| 10 | 83323344 |
| 11 | 145532816 |
| 12 | 227110416 |
| 13 | 363737712 |
| 14 | 531517376 |
| 15 | 800145632 |
| 16 | 1104376728 |
| 17 | 1594656544 |
| 18 | 2114015514 |
| 19 | 2931991920 |
| 20 | 3779027408 |
| 21 | 5091783840 |
| 22 | 6365016528 |
| 23 | 8409556064 |
| 24 | 10285042352 |
| 25 | 13266026280 |
| 26 | 15994749968 |
[1,312,11466,116688,535704,1899664,5043376, 12066912,24443978,48210760,83323344,145532816, 227110416,363737712,531517376,800145632, 1104376728,1594656544,2114015514,2931991920, 3779027408,5091783840,6365016528,8409556064, 10285042352,13266026280,15994749968] |