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 | 5624032642 |
| 9 | 5624033055 |
| 10 | 5624104634 |
| 11 | 5624105050 |
| 12 | 5624110136 |
| 13 | 102616333034 |
| 14 | 102620103253 |
| 15 | 103055445560 |
| 16 | 206154633166 |
| 17 | 206154633200 |
| 18 | 212216263215 |
| 19 | 212220033434 |
| 20 | 315315450515 |
| 21 | 321340554340 |
| 22 | 424436332033 |
| 23 | 424440102253 |
| 24 | 430461435550 |