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| n | a(n) |
|---|---|
| -1 | 1 |
| 0 | 3 |
| 1 | 9 |
| 2 | 16 |
| 3 | 33 |
| 4 | 54 |
| 5 | 98 |
| 6 | 150 |
| 7 | 243 |
| 8 | 364 |
| 9 | 564 |
| 10 | 828 |
| 11 | 1221 |
| 12 | 1749 |
| 13 | 2511 |
| 14 | 3528 |
| 15 | 4938 |
| 16 | 6804 |
| 17 | 9358 |
| 18 | 12714 |
| 19 | 17217 |
| 20 | 23068 |
| 21 | 30822 |
| 22 | 40824 |
| 23 | 53916 |
| 24 | 70659 |
| 25 | 92340 |
| 26 | 119912 |
| 27 | 155277 |
| 28 | 199980 |
| 29 | 256792 |
| 30 | 328218 |
| 31 | 418311 |
| 32 | 530960 |
| 33 | 672072 |
| 34 | 847584 |
| 35 | 1066157 |
| 36 | 1336686 |
| 37 | 1671741 |
| 38 | 2084464 |
| 39 | 2593059 |
| 40 | 3216834 |
| 41 | 3981926 |
[1,3,9,16,33,54,98,150,243,364,564,828,1221,1749, 2511,3528,4938,6804,9358,12714,17217,23068,30822, 40824,53916,70659,92340,119912,155277,199980, 256792,328218,418311,530960,672072,847584,1066157, 1336686,1671741,2084464,2593059,3216834,3981926] |