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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 3 |
| 4 | 0 |
| 5 | 0 |
| 6 | 9 |
| 7 | 0 |
| 8 | 8 |
| 9 | 27 |
| 10 | 0 |
| 11 | 24 |
| 12 | 81 |
| 13 | 13 |
| 14 | 72 |
| 15 | 243 |
| 16 | 103 |
| 17 | 216 |
| 18 | 747 |
| 19 | 309 |
| 20 | 648 |
| 21 | 2345 |
| 22 | 927 |
| 23 | 1967 |
| 24 | 7547 |
| 25 | 2781 |
| 26 | 6214 |
| 27 | 22641 |
| 28 | 8371 |
| 29 | 19474 |
| 30 | 67923 |
| 31 | 25531 |
| 32 | 62518 |
| 33 | 203802 |
| 34 | 79097 |
| 35 | 187554 |
| 36 | 612253 |
| 37 | 243947 |
| 38 | 562700 |
| 39 | 1842300 |
| 40 | 764609 |
| 41 | 1689142 |
| 42 | 5546932 |
| 43 | 2293870 |
| 44 | 5077244 |
[1,0,0,3,0,0,9,0,8,27,0,24,81,13,72,243,103,216, 747,309,648,2345,927,1967,7547,2781,6214,22641, 8371,19474,67923,25531,62518,203802,79097,187554, 612253,243947,562700,1842300,764609,1689142, 5546932,2293870,5077244] |