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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 766 |
| 3 | 2587 |
| 4 | 12629 |
| 5 | 104977 |
| 6 | 1068623 |
| 7 | 1844423 |
| 8 | 2056849 |
| 9 | 2089207 |
| 10 | 3126943 |
| 11 | 3216923 |
| 12 | 3410107 |
| 13 | 11894353 |
| 14 | 14467237 |
| 15 | 20409227 |
| 16 | 20544577 |
| 17 | 23417957 |
| 18 | 53531447 |
| 19 | 57145091 |
[4,766,2587,12629,104977,1068623,1844423,2056849, 2089207,3126943,3216923,3410107,11894353,14467237, 20409227,20544577,23417957,53531447,57145091] |