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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 7 |
| 6 | 8 |
| 7 | 14 |
| 8 | 50 |
| 9 | 70 |
| 10 | 76 |
| 11 | 223 |
| 12 | 295 |
| 13 | 314 |
| 14 | 2089 |
| 15 | 2905 |
| 16 | 3394 |
| 17 | 3881 |
| 18 | 5113 |
| 19 | 6055 |
| 20 | 7253 |
| 21 | 7994 |
| 22 | 18172 |
| 23 | 18970 |
| 24 | 35005 |
| 25 | 69673 |
[0,1,2,4,7,8,14,50,70,76,223,295,314,2089,2905, 3394,3881,5113,6055,7253,7994,18172,18970,35005, 69673] |