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 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 4 |
| 6 | 5 |
| 7 | 6 |
| 8 | 7 |
| 9 | 8 |
| 10 | 9 |
| 11 | 10 |
| 12 | 35 |
| 13 | 46 |
| 14 | 51 |
| 15 | 194 |
| 16 | 234 |
| 17 | 273 |
| 18 | 349 |
| 19 | 386 |
| 20 | 423 |
| 21 | 1411 |
| 22 | 1717 |
| 23 | 2017 |
| 24 | 2889 |
| 25 | 3173 |
| 26 | 13455 |
| 27 | 22933 |
| 28 | 68896 |
| 29 | 89733 |
| 30 | 130334 |
| 31 | 169949 |
| 32 | 189481 |
| 33 | 208861 |
| 34 | 1273968 |
| 35 | 4977354 |
| 36 | 12523569 |
| 37 | 43631177 |
| 38 | 123579653 |
| 39 | 631296394 |
| 40 | 21506946847 |
| 41 | 3541615362849 |
| 42 | 8590606646469 |