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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 8 |
| 3 | 28 |
| 4 | 108 |
| 5 | 189 |
| 6 | 324 |
| 7 | 648 |
| 8 | 972 |
| 9 | 756 |
| 10 | 1701 |
| 11 | 2457 |
| 12 | 1512 |
| 13 | 3888 |
| 14 | 2268 |
| 15 | 4536 |
| 16 | 6048 |
| 17 | 13104 |
| 18 | 10584 |
| 19 | 15120 |
| 20 | 6804 |
| 21 | 16848 |
| 22 | 9072 |
| 23 | 14364 |
| 24 | 9828 |
| 25 | 28728 |
| 26 | 19656 |
| 27 | 21168 |
| 28 | 36288 |
| 29 | 31752 |
| 30 | 50544 |
| 31 | 27216 |
| 32 | 46683 |
| 33 | 70308 |
| 34 | 29484 |
| 35 | 57456 |
| 36 | 39312 |
| 37 | 81648 |
| 38 | 111132 |
| 39 | 63504 |
| 40 | 58968 |
| 41 | 108864 |
[0,1,8,28,108,189,324,648,972,756,1701,2457,1512, 3888,2268,4536,6048,13104,10584,15120,6804,16848, 9072,14364,9828,28728,19656,21168,36288,31752, 50544,27216,46683,70308,29484,57456,39312,81648, 111132,63504,58968,108864] |