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 | 0 |
| 2 | 2 |
| 3 | 7 |
| 4 | 21 |
| 5 | 23 |
| 6 | 64 |
| 7 | 69 |
| 8 | 71 |
| 9 | 193 |
| 10 | 207 |
| 11 | 209 |
| 12 | 214 |
| 13 | 579 |
| 14 | 581 |
| 15 | 622 |
| 16 | 627 |
| 17 | 629 |
| 18 | 643 |
| 19 | 1737 |
| 20 | 1739 |
| 21 | 1744 |
| 22 | 1866 |
| 23 | 1868 |
| 24 | 1882 |
| 25 | 1887 |
| 26 | 1889 |
| 27 | 1930 |
| 28 | 5211 |
| 29 | 5213 |
| 30 | 5218 |
| 31 | 5232 |
| 32 | 5234 |
| 33 | 5599 |
| 34 | 5604 |
| 35 | 5606 |
| 36 | 5647 |
| 37 | 5661 |
| 38 | 5663 |
| 39 | 5668 |
| 40 | 5790 |
| 41 | 5792 |
| 42 | 15634 |
| 43 | 15639 |
| 44 | 15641 |
| 45 | 15655 |
| 46 | 15696 |
| 47 | 15698 |