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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 1 |
| 6 | 6 |
| 7 | 7 |
| 8 | 10 |
| 9 | 19 |
| 10 | 26 |
| 11 | 35 |
| 12 | 56 |
| 13 | 99 |
| 14 | 154 |
| 15 | 251 |
| 16 | 437 |
| 17 | 759 |
| 18 | 1262 |
| 19 | 1953 |
| 20 | 2963 |
| 21 | 4652 |
| 22 | 7847 |
| 23 | 13588 |
[1,1,1,1,2,1,6,7,10,19,26,35,56,99,154,251,437, 759,1262,1953,2963,4652,7847,13588] |