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| n | a(n) |
|---|---|
| 1 | 14 |
| 2 | 196 |
| 3 | 450 |
| 4 | 2514 |
| 5 | 11950 |
| 6 | 49122 |
| 7 | 240346 |
| 8 | 1128862 |
| 9 | 4877154 |
| 10 | 23327018 |
| 11 | 108074514 |
| 12 | 478733418 |
| 13 | 2262096566 |
| 14 | 10409692914 |
| 15 | 46789327172 |
| 16 | 219235503298 |
| 17 | 1005810194939 |
| 18 | 4561769370045 |
| 19 | 21244661132558 |
| 20 | 97362267362778 |
| 21 | 444028822734414 |
[14,196,450,2514,11950,49122,240346,1128862, 4877154,23327018,108074514,478733418,2262096566, 10409692914,46789327172,219235503298, 1005810194939,4561769370045,21244661132558, 97362267362778,444028822734414] |