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| n | a(n) |
|---|---|
| 1 | 2696 |
| 2 | 11293 |
| 3 | 50454 |
| 4 | 170900 |
| 5 | 603895 |
| 6 | 1990286 |
| 7 | 6557179 |
| 8 | 20990158 |
| 9 | 66511881 |
| 10 | 206889218 |
| 11 | 638407700 |
| 12 | 1953110307 |
| 13 | 5950273442 |
| 14 | 18061423893 |
| 15 | 54710654569 |
| 16 | 165447019004 |
| 17 | 499781356823 |
| 18 | 1508449839592 |
| 19 | 4550294119859 |
| 20 | 13720340793246 |
[2696,11293,50454,170900,603895,1990286,6557179, 20990158,66511881,206889218,638407700,1953110307, 5950273442,18061423893,54710654569,165447019004, 499781356823,1508449839592,4550294119859, 13720340793246] |