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| n | a(n) |
|---|---|
| 1 | 169500 |
| 2 | 429252 |
| 3 | 981554 |
| 4 | 2124772 |
| 5 | 5670054 |
| 6 | 14531028 |
| 7 | 44834198 |
| 8 | 103052284 |
| 9 | 289710868 |
| 10 | 714991524 |
| 11 | 2073202494 |
| 12 | 5037663196 |
| 13 | 14400319528 |
| 14 | 35544592788 |
| 15 | 102319066146 |
| 16 | 250987978892 |
| 17 | 715147909084 |
| 18 | 1775491235180 |
| 19 | 5087033191386 |
[169500,429252,981554,2124772,5670054,14531028, 44834198,103052284,289710868,714991524,2073202494, 5037663196,14400319528,35544592788,102319066146, 250987978892,715147909084,1775491235180, 5087033191386] |