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| n | a(n) |
|---|---|
| 1 | 26 |
| 2 | 1236 |
| 3 | 13726 |
| 4 | 84048 |
| 5 | 325932 |
| 6 | 1118854 |
| 7 | 2843394 |
| 8 | 6976192 |
| 9 | 14900828 |
| 10 | 30426976 |
| 11 | 54176690 |
| 12 | 102373984 |
| 13 | 165774050 |
| 14 | 274508960 |
| 15 | 439528372 |
| 16 | 685793860 |
| 17 | 988022550 |
| 18 | 1499573556 |
| 19 | 2077344368 |
| 20 | 3019161806 |
| 21 | 4198346324 |
| 22 | 5736736398 |
| 23 | 7500683014 |
[26,1236,13726,84048,325932,1118854,2843394, 6976192,14900828,30426976,54176690,102373984, 165774050,274508960,439528372,685793860,988022550, 1499573556,2077344368,3019161806,4198346324, 5736736398,7500683014] |