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 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 5 |
| 5 | 6 |
| 6 | 10 |
| 7 | 12 |
| 8 | 14 |
| 9 | 18 |
| 10 | 19 |
| 11 | 57 |
| 12 | 119 |
| 13 | 133 |
| 14 | 209 |
| 15 | 399 |
| 16 | 437 |
| 17 | 633 |
| 18 | 1102 |
| 19 | 3517 |
| 20 | 5719 |
| 21 | 29849 |
| 22 | 38532 |
| 23 | 42759 |
| 24 | 198639 |
| 25 | 247801 |
| 26 | 421591 |
| 27 | 566561 |
| 28 | 819185 |
| 29 | 6781309 |