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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 5 |
| 8 | 6 |
| 9 | 7 |
| 10 | 21 |
| 11 | 24 |
| 12 | 27 |
| 13 | 90 |
| 14 | 105 |
| 15 | 121 |
| 16 | 385 |
| 17 | 450 |
| 18 | 520 |
| 19 | 1651 |
| 20 | 1939 |
| 21 | 2255 |
| 22 | 7175 |
| 23 | 8456 |
| 24 | 9877 |
| 25 | 31416 |
| 26 | 37122 |
| 27 | 43510 |
| 28 | 138510 |
| 29 | 164025 |
| 30 | 192801 |
| 31 | 614019 |
| 32 | 728409 |
| 33 | 858199 |
| 34 | 2734171 |
| 35 | 3248322 |
| 36 | 3834655 |
| 37 | 12220780 |
| 38 | 14536951 |
| 39 | 17189667 |
[0,0,0,0,0,0,5,6,7,21,24,27,90,105,121,385,450, 520,1651,1939,2255,7175,8456,9877,31416,37122, 43510,138510,164025,192801,614019,728409,858199, 2734171,3248322,3834655,12220780,14536951, 17189667] |