| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 9 |
| 5 | 12 |
| 6 | 15 |
| 7 | 19 |
| 8 | 24 |
| 9 | 30 |
| 10 | 36 |
| 11 | 42 |
| 12 | 48 |
| 13 | 55 |
| 14 | 63 |
| 15 | 72 |
| 16 | 81 |
| 17 | 90 |
| 18 | 99 |
| 19 | 109 |
| 20 | 120 |
| 21 | 132 |
| 22 | 144 |
| 23 | 156 |
| 24 | 168 |
| 25 | 181 |
| 26 | 195 |
| 27 | 210 |
| 28 | 225 |
| 29 | 240 |
| 30 | 255 |
| 31 | 271 |
| 32 | 288 |
| 33 | 306 |
| 34 | 324 |
| 35 | 342 |
| 36 | 360 |
| 37 | 379 |
| 38 | 399 |
| 39 | 420 |
| 40 | 441 |
| 41 | 462 |
| 42 | 483 |
| 43 | 505 |
| 44 | 528 |
| 45 | 552 |
| 46 | 576 |
| 47 | 600 |
| 48 | 624 |
| 49 | 649 |
| 50 | 675 |
| 51 | 702 |
| 52 | 729 |
| 53 | 756 |
| 54 | 783 |
| 55 | 811 |
[0,1,3,6,9,12,15,19,24,30,36,42,48,55,63,72,81,90, 99,109,120,132,144,156,168,181,195,210,225,240, 255,271,288,306,324,342,360,379,399,420,441,462, 483,505,528,552,576,600,624,649,675,702,729,756, 783,811] |