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| n | a(n) |
|---|---|
| 1 | 2458 |
| 2 | 22256 |
| 3 | 73826 |
| 4 | 160688 |
| 5 | 412514 |
| 6 | 1339010 |
| 7 | 4297634 |
| 8 | 13186856 |
| 9 | 40282992 |
| 10 | 123998850 |
| 11 | 382415504 |
| 12 | 1178020562 |
| 13 | 3627007218 |
| 14 | 11168774306 |
| 15 | 34396342056 |
| 16 | 105928920848 |
| 17 | 326217328994 |
| 18 | 1004613387440 |
| 19 | 3093802840514 |
| 20 | 9527668767266 |
[2458,22256,73826,160688,412514,1339010,4297634, 13186856,40282992,123998850,382415504,1178020562, 3627007218,11168774306,34396342056,105928920848, 326217328994,1004613387440,3093802840514, 9527668767266] |