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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 104 |
| 3 | 660 |
| 4 | 2474 |
| 5 | 6604 |
| 6 | 14696 |
| 7 | 28490 |
| 8 | 50448 |
| 9 | 83092 |
| 10 | 129642 |
| 11 | 193292 |
| 12 | 278240 |
| 13 | 388258 |
| 14 | 528328 |
| 15 | 703140 |
| 16 | 918330 |
| 17 | 1179228 |
| 18 | 1492584 |
| 19 | 1864202 |
| 20 | 2301584 |
| 21 | 2811588 |
| 22 | 3402266 |
| 23 | 4081084 |
| 24 | 4857344 |
| 25 | 5738882 |
| 26 | 6735720 |
| 27 | 7856884 |
| 28 | 9112842 |
| 29 | 10513196 |
| 30 | 12069800 |
[2,104,660,2474,6604,14696,28490,50448,83092, 129642,193292,278240,388258,528328,703140,918330, 1179228,1492584,1864202,2301584,2811588,3402266, 4081084,4857344,5738882,6735720,7856884,9112842, 10513196,12069800] |