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| n | a(n) |
|---|---|
| 1 | 12 |
| 2 | 215 |
| 3 | 1901 |
| 4 | 11071 |
| 5 | 48701 |
| 6 | 175410 |
| 7 | 543050 |
| 8 | 1493647 |
| 9 | 3734127 |
| 10 | 8629470 |
| 11 | 18668476 |
| 12 | 38179126 |
| 13 | 74385462 |
| 14 | 138932619 |
| 15 | 250023457 |
| 16 | 435361212 |
| 17 | 736109581 |
| 18 | 1212153012 |
| 19 | 1948954846 |
| 20 | 3066408954 |
| 21 | 4730088166 |
| 22 | 7165425434 |
| 23 | 10675359121 |
| 24 | 15662148169 |
[12,215,1901,11071,48701,175410,543050,1493647, 3734127,8629470,18668476,38179126,74385462, 138932619,250023457,435361212,736109581, 1212153012,1948954846,3066408954,4730088166, 7165425434,10675359121,15662148169] |