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| n | a(n) |
|---|---|
| 1 | 288510 |
| 2 | 599342 |
| 3 | 1305758 |
| 4 | 3521538 |
| 5 | 9463558 |
| 6 | 28726138 |
| 7 | 85432998 |
| 8 | 274327842 |
| 9 | 861350910 |
| 10 | 2864080130 |
| 11 | 9315197206 |
| 12 | 31814010530 |
| 13 | 106323169366 |
| 14 | 371685914410 |
| 15 | 1271924315006 |
| 16 | 4544534816810 |
| 17 | 15898950277366 |
| 18 | 58024454397690 |
[288510,599342,1305758,3521538,9463558,28726138, 85432998,274327842,861350910,2864080130, 9315197206,31814010530,106323169366,371685914410, 1271924315006,4544534816810,15898950277366, 58024454397690] |