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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 0 |
| 6 | 1 |
| 7 | 4 |
| 8 | 8 |
| 9 | 0 |
| 10 | 3 |
| 11 | 37 |
| 12 | 80 |
| 13 | 6 |
| 14 | 17 |
| 15 | 461 |
| 16 | 868 |
| 17 | 190 |
| 18 | 364 |
| 19 | 5570 |
| 20 | 11342 |
| 21 | 3993 |
| 22 | 7307 |
| 23 | 78644 |
[0,0,1,1,0,1,4,8,0,3,37,80,6,17,461,868,190,364, 5570,11342,3993,7307,78644] |