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 | 27 |
| 2 | 69 |
| 3 | 123 |
| 4 | 195 |
| 5 | 273 |
| 6 | 375 |
| 7 | 477 |
| 8 | 603 |
| 9 | 735 |
| 10 | 885 |
| 11 | 1035 |
| 12 | 1221 |
| 13 | 1395 |
| 14 | 1593 |
| 15 | 1803 |
| 16 | 2031 |
| 17 | 2253 |
| 18 | 2511 |
| 19 | 2757 |
| 20 | 3039 |
| 21 | 3321 |
| 22 | 3615 |
| 23 | 3909 |
| 24 | 4251 |
| 25 | 4575 |
| 26 | 4917 |
| 27 | 5271 |
| 28 | 5649 |
| 29 | 6015 |
| 30 | 6429 |
| 31 | 6819 |
| 32 | 7245 |
| 33 | 7671 |
| 34 | 8109 |
| 35 | 8559 |
| 36 | 9051 |
| 37 | 9513 |
| 38 | 9999 |
| 39 | 10497 |
| 40 | 11031 |
| 41 | 11541 |
| 42 | 12099 |
| 43 | 12633 |