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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 11 |
| 3 | 30 |
| 4 | 65 |
| 5 | 128 |
| 6 | 234 |
| 7 | 410 |
| 8 | 700 |
| 9 | 1173 |
| 10 | 1945 |
| 11 | 3198 |
| 12 | 5230 |
| 13 | 8524 |
| 14 | 13858 |
| 15 | 22493 |
| 16 | 36470 |
| 17 | 59089 |
| 18 | 95694 |
| 19 | 154926 |
| 20 | 250770 |
| 21 | 405854 |
| 22 | 656789 |
| 23 | 1062817 |
| 24 | 1719788 |
| 25 | 2782794 |
| 26 | 4502780 |
| 27 | 7285780 |
[2,11,30,65,128,234,410,700,1173,1945,3198,5230, 8524,13858,22493,36470,59089,95694,154926,250770, 405854,656789,1062817,1719788,2782794,4502780, 7285780] |