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| n | a(n) |
|---|---|
| 1 | 72 |
| 2 | 214 |
| 3 | 610 |
| 4 | 1690 |
| 5 | 4664 |
| 6 | 12809 |
| 7 | 35172 |
| 8 | 96615 |
| 9 | 265372 |
| 10 | 728983 |
| 11 | 2002395 |
| 12 | 5500247 |
| 13 | 15108294 |
| 14 | 41499921 |
| 15 | 113994101 |
| 16 | 313124795 |
| 17 | 860106901 |
| 18 | 2362586936 |
| 19 | 6489676798 |
| 20 | 17826180446 |
| 21 | 48965883404 |
| 22 | 134502048011 |
| 23 | 369457236654 |
| 24 | 1014844430800 |
[72,214,610,1690,4664,12809,35172,96615,265372, 728983,2002395,5500247,15108294,41499921, 113994101,313124795,860106901,2362586936, 6489676798,17826180446,48965883404,134502048011, 369457236654,1014844430800] |