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| n | a(n) |
|---|---|
| 1 | 10991 |
| 2 | 31774 |
| 3 | 53776 |
| 4 | 112929 |
| 5 | 327823 |
| 6 | 1080979 |
| 7 | 2183207 |
| 8 | 5486634 |
| 9 | 16631787 |
| 10 | 51672060 |
| 11 | 114374144 |
| 12 | 303612703 |
| 13 | 922940376 |
| 14 | 2704035839 |
| 15 | 6383581782 |
| 16 | 17609747682 |
| 17 | 52579573030 |
| 18 | 148181650270 |
| 19 | 369603880321 |
| 20 | 1038233037114 |
[10991,31774,53776,112929,327823,1080979,2183207, 5486634,16631787,51672060,114374144,303612703, 922940376,2704035839,6383581782,17609747682, 52579573030,148181650270,369603880321, 1038233037114] |