This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 15 |
| 2 | 45 |
| 3 | 90 |
| 4 | 150 |
| 5 | 225 |
| 6 | 315 |
| 7 | 420 |
| 8 | 540 |
| 9 | 675 |
| 10 | 825 |
| 11 | 990 |
| 12 | 1170 |
| 13 | 1365 |
| 14 | 1575 |
| 15 | 1800 |
| 16 | 2040 |
| 17 | 2295 |
| 18 | 2565 |
| 19 | 2850 |
| 20 | 3150 |
| 21 | 3465 |
| 22 | 3795 |
| 23 | 4140 |
| 24 | 4500 |
| 25 | 4875 |
| 26 | 5265 |
| 27 | 5670 |
| 28 | 6090 |
| 29 | 6525 |
| 30 | 6975 |
| 31 | 7440 |
| 32 | 7920 |
| 33 | 8415 |
| 34 | 8925 |
| 35 | 9450 |
| 36 | 9990 |
| 37 | 10545 |
| 38 | 11115 |
| 39 | 11700 |
| 40 | 12300 |
| 41 | 12915 |
| 42 | 13545 |
| 43 | 14190 |
| 44 | 14850 |
| 45 | 15525 |