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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 4 |
| 4 | 11 |
| 5 | 29 |
| 6 | 70 |
| 7 | 161 |
| 8 | 346 |
| 9 | 704 |
| 10 | 1370 |
| 11 | 2558 |
| 12 | 4613 |
| 13 | 8063 |
| 14 | 13706 |
| 15 | 22728 |
| 16 | 36853 |
| 17 | 58550 |
| 18 | 91313 |
| 19 | 140011 |
| 20 | 211355 |
| 21 | 314493 |
| 22 | 461765 |
| 23 | 669660 |
| 24 | 960022 |
| 25 | 1361545 |
| 26 | 1911639 |
| 27 | 2658716 |
| 28 | 3665011 |
| 29 | 5010011 |
| 30 | 6794629 |
| 31 | 9146244 |
| 32 | 12224774 |
| 33 | 16229962 |
[1,1,4,11,29,70,161,346,704,1370,2558,4613,8063, 13706,22728,36853,58550,91313,140011,211355, 314493,461765,669660,960022,1361545,1911639, 2658716,3665011,5010011,6794629,9146244,12224774, 16229962] |