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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 5 |
| 5 | 7 |
| 6 | 17 |
| 7 | 18 |
| 8 | 20 |
| 9 | 31 |
| 10 | 47 |
| 11 | 64 |
| 12 | 71 |
| 13 | 98 |
| 14 | 119 |
| 15 | 200 |
| 16 | 307 |
| 17 | 716 |
| 18 | 967 |
| 19 | 1343 |
| 20 | 2131 |
| 21 | 3566 |
| 22 | 3967 |
| 23 | 8326 |
| 24 | 10597 |
| 25 | 12464 |
| 26 | 15874 |
| 27 | 18894 |
| 28 | 28610 |
| 29 | 29417 |
| 30 | 83692 |
[0,1,2,5,7,17,18,20,31,47,64,71,98,119,200,307, 716,967,1343,2131,3566,3967,8326,10597,12464, 15874,18894,28610,29417,83692] |