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 | 5 |
| 3 | 26 |
| 4 | 77 |
| 5 | 522 |
| 6 | 669 |
| 7 | 5772 |
| 8 | 13827 |
| 9 | 48610 |
| 10 | 55991 |
| 11 | 699612 |
| 12 | 785633 |
| 13 | 11359222 |
| 14 | 12530955 |
| 15 | 13726712 |
| 16 | 29889983 |
| 17 | 550271934 |
| 18 | 593094837 |
| 19 | 12094689300 |
| 20 | 12932216325 |
| 21 | 13780828710 |
| 22 | 14640022575 |
| 23 | 356714770680 |
| 24 | 376932115005 |
| 25 | 1986818142426 |