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 | 4 |
| 2 | 16 |
| 3 | 24 |
| 4 | 48 |
| 5 | 63 |
| 6 | 75 |
| 7 | 115 |
| 8 | 139 |
| 9 | 199 |
| 10 | 215 |
| 11 | 250 |
| 12 | 334 |
| 13 | 382 |
| 14 | 402 |
| 15 | 438 |
| 16 | 550 |
| 17 | 580 |
| 18 | 643 |
| 19 | 787 |
| 20 | 811 |
| 21 | 891 |
| 22 | 1071 |
| 23 | 1092 |
| 24 | 1140 |
| 25 | 1239 |
| 26 | 1267 |
| 27 | 1339 |
| 28 | 1559 |
| 29 | 1679 |
| 30 | 1943 |
| 31 | 1975 |
| 32 | 2020 |
| 33 | 2090 |
| 34 | 2233 |
| 35 | 2293 |
| 36 | 2605 |
| 37 | 2773 |
| 38 | 2809 |
| 39 | 2929 |
| 40 | 3293 |
| 41 | 3338 |
| 42 | 3434 |
| 43 | 3629 |
| 44 | 4049 |
| 45 | 4089 |
| 46 | 4161 |
| 47 | 4385 |