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| n | a(n) |
|---|---|
| 1 | 582144 |
| 2 | 1123724 |
| 3 | 2264904 |
| 4 | 5162984 |
| 5 | 12178344 |
| 6 | 31418264 |
| 7 | 83324136 |
| 8 | 236748824 |
| 9 | 690049704 |
| 10 | 2128516184 |
| 11 | 6731960424 |
| 12 | 22318060184 |
| 13 | 75732130344 |
| 14 | 266822847704 |
| 15 | 958417428456 |
| 16 | 3541285003544 |
| 17 | 13272289633704 |
| 18 | 50766360814424 |
[582144,1123724,2264904,5162984,12178344,31418264, 83324136,236748824,690049704,2128516184, 6731960424,22318060184,75732130344,266822847704, 958417428456,3541285003544,13272289633704, 50766360814424] |