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) |
|---|---|
| 0 | 10 |
| 1 | 11 |
| 2 | 21 |
| 3 | 53 |
| 4 | 74 |
| 5 | 127 |
| 6 | 2614 |
| 7 | 2741 |
| 8 | 5355 |
| 9 | 13451 |
| 10 | 18806 |
| 11 | 32257 |
| 12 | 663946 |
| 13 | 696203 |
| 14 | 1360149 |
| 15 | 3416501 |
| 16 | 4776650 |
| 17 | 8193151 |
| 18 | 168639670 |
| 19 | 176832821 |
| 20 | 345472491 |
| 21 | 867777803 |
| 22 | 1213250294 |
| 23 | 2081028097 |
| 24 | 42833812234 |