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) |
|---|---|
| 1 | 15 |
| 2 | 150 |
| 3 | 315 |
| 4 | 615 |
| 5 | 915 |
| 6 | 1155 |
| 7 | 1215 |
| 8 | 1500 |
| 9 | 1515 |
| 10 | 1530 |
| 11 | 1545 |
| 12 | 1560 |
| 13 | 1575 |
| 14 | 1590 |
| 15 | 1815 |
| 16 | 2115 |
| 17 | 2415 |
| 18 | 2715 |
| 19 | 3015 |
| 20 | 3150 |
| 21 | 3315 |
| 22 | 3615 |
| 23 | 3915 |
| 24 | 4155 |
| 25 | 4215 |
| 26 | 4515 |
| 27 | 4815 |
| 28 | 5115 |
| 29 | 5415 |
| 30 | 5715 |
| 31 | 6015 |
| 32 | 6150 |
| 33 | 6315 |
| 34 | 6615 |
| 35 | 6915 |
| 36 | 7155 |
| 37 | 7215 |
| 38 | 7515 |
| 39 | 7815 |
| 40 | 8115 |
| 41 | 8415 |
| 42 | 8715 |
| 43 | 9015 |