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 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 14 |
| 5 | 17 |
| 6 | 31 |
| 7 | 48 |
| 8 | 223 |
| 9 | 271 |
| 10 | 494 |
| 11 | 765 |
| 12 | 3554 |
| 13 | 4319 |
| 14 | 7873 |
| 15 | 12192 |
| 16 | 56641 |
| 17 | 68833 |
| 18 | 125474 |
| 19 | 194307 |
| 20 | 902702 |
| 21 | 1097009 |
| 22 | 1999711 |
| 23 | 3096720 |
| 24 | 14386591 |
| 25 | 17483311 |
| 26 | 31869902 |
| 27 | 49353213 |
| 28 | 229282754 |
| 29 | 278635967 |