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 | 8 |
| 4 | 19 |
| 5 | 79 |
| 6 | 188 |
| 7 | 782 |
| 8 | 1861 |
| 9 | 7741 |
| 10 | 18422 |
| 11 | 76628 |
| 12 | 182359 |
| 13 | 758539 |
| 14 | 1805168 |
| 15 | 7508762 |
| 16 | 17869321 |
| 17 | 74329081 |
| 18 | 176888042 |
| 19 | 735782048 |
| 20 | 1751011099 |
| 21 | 7283491399 |
| 22 | 17333222948 |
| 23 | 72099131942 |
| 24 | 171581218381 |
| 25 | 713707828021 |
| 26 | 1698478960862 |
| 27 | 7064979148268 |
| 28 | 16813208390239 |