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 | 7 |
| 3 | 11 |
| 4 | 20 |
| 5 | 25 |
| 6 | 31 |
| 7 | 46 |
| 8 | 53 |
| 9 | 68 |
| 10 | 87 |
| 11 | 106 |
| 12 | 118 |
| 13 | 152 |
| 14 | 163 |
| 15 | 190 |
| 16 | 204 |
| 17 | 247 |
| 18 | 344 |
| 19 | 377 |
| 20 | 418 |
| 21 | 436 |
| 22 | 474 |
| 23 | 492 |
| 24 | 516 |
| 25 | 558 |
| 26 | 580 |
| 27 | 647 |
| 28 | 669 |
| 29 | 713 |
| 30 | 816 |
| 31 | 894 |
| 32 | 975 |
| 33 | 1003 |
| 34 | 1028 |
| 35 | 1179 |
| 36 | 1300 |
| 37 | 1392 |
| 38 | 1526 |
| 39 | 1561 |
| 40 | 1695 |
| 41 | 1768 |
| 42 | 1917 |
| 43 | 1952 |
| 44 | 2069 |
| 45 | 2177 |
| 46 | 2343 |
| 47 | 2601 |
| 48 | 2643 |
| 49 | 2769 |
| 50 | 2812 |