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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 6 |
| 2 | 18 |
| 3 | 75 |
| 4 | 126 |
| 5 | 288 |
| 6 | 405 |
| 7 | 726 |
| 8 | 936 |
| 9 | 1470 |
| 10 | 1800 |
| 11 | 2601 |
| 12 | 3078 |
| 13 | 4200 |
| 14 | 4851 |
| 15 | 6348 |
| 16 | 7200 |
| 17 | 9126 |
| 18 | 10206 |
| 19 | 12615 |
| 20 | 13950 |
| 21 | 16896 |
| 22 | 18513 |
| 23 | 22050 |
| 24 | 23976 |
| 25 | 28158 |
| 26 | 30420 |
| 27 | 35301 |
| 28 | 37926 |
| 29 | 43560 |
| 30 | 46575 |
| 31 | 53016 |
| 32 | 56448 |
| 33 | 63750 |
| 34 | 67626 |
| 35 | 75843 |
| 36 | 80190 |
| 37 | 89376 |
| 38 | 94221 |
| 39 | 104430 |
| 40 | 109800 |
| 41 | 121086 |
| 42 | 127008 |
| 43 | 139425 |
| 44 | 145926 |
| 45 | 159528 |
| 46 | 166635 |
[0,6,18,75,126,288,405,726,936,1470,1800,2601, 3078,4200,4851,6348,7200,9126,10206,12615,13950, 16896,18513,22050,23976,28158,30420,35301,37926, 43560,46575,53016,56448,63750,67626,75843,80190, 89376,94221,104430,109800,121086,127008,139425, 145926,159528,166635] |