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| n | a(n) |
|---|---|
| 1 | 1966 |
| 2 | 8207 |
| 3 | 20608 |
| 4 | 51347 |
| 5 | 118871 |
| 6 | 272547 |
| 7 | 608267 |
| 8 | 1356939 |
| 9 | 3017800 |
| 10 | 6755296 |
| 11 | 15194024 |
| 12 | 34402203 |
| 13 | 78257659 |
| 14 | 178761713 |
| 15 | 409448316 |
| 16 | 939731942 |
| 17 | 2159479782 |
| 18 | 4966624315 |
| 19 | 11428488961 |
| 20 | 26305947749 |
| 21 | 60561558048 |
| 22 | 139440168208 |
[1966,8207,20608,51347,118871,272547,608267, 1356939,3017800,6755296,15194024,34402203, 78257659,178761713,409448316,939731942,2159479782, 4966624315,11428488961,26305947749,60561558048, 139440168208] |