| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 5 |
| 2 | 20 |
| 3 | 45 |
| 4 | 80 |
| 5 | 125 |
| 6 | 180 |
| 7 | 245 |
| 8 | 320 |
| 9 | 405 |
| 10 | 500 |
| 11 | 605 |
| 12 | 720 |
| 13 | 845 |
| 14 | 980 |
| 15 | 1125 |
| 16 | 1280 |
| 17 | 1445 |
| 18 | 1620 |
| 19 | 1805 |
| 20 | 2000 |
| 21 | 2205 |
| 22 | 2420 |
| 23 | 2645 |
| 24 | 2880 |
| 25 | 3125 |
| 26 | 3380 |
| 27 | 3645 |
| 28 | 3920 |
| 29 | 4205 |
| 30 | 4500 |
| 31 | 4805 |
| 32 | 5120 |
| 33 | 5445 |
| 34 | 5780 |
| 35 | 6125 |
| 36 | 6480 |
| 37 | 6845 |
| 38 | 7220 |
| 39 | 7605 |
| 40 | 8000 |
| 41 | 8405 |
| 42 | 8820 |
| 43 | 9245 |
| 44 | 9680 |
| 45 | 10125 |
| 46 | 10580 |
| 47 | 11045 |
| 48 | 11520 |
| 49 | 12005 |
| 50 | 12500 |
[0,5,20,45,80,125,180,245,320,405,500,605,720,845, 980,1125,1280,1445,1620,1805,2000,2205,2420,2645, 2880,3125,3380,3645,3920,4205,4500,4805,5120,5445, 5780,6125,6480,6845,7220,7605,8000,8405,8820,9245, 9680,10125,10580,11045,11520,12005,12500] |