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 | 7 |
| 2 | 73 |
| 3 | 42 |
| 4 | 4319 |
| 5 | 490 |
| 6 | 69553 |
| 7 | 5558 |
| 8 | 555839 |
| 9 | 61362 |
| 10 | 13329365 |
| 11 | 660814 |
| 12 | 5870460269 |
| 13 | 6961994 |
| 14 | 134611351 |
| 15 | 71990310 |
| 16 | 117354472543 |
| 17 | 732908386 |
| 18 | 1856852077771 |
| 19 | 7365970046 |
| 20 | 7674385814989 |
| 21 | 73244492538 |
| 22 | 31764000135329 |
| 23 | 721860840022 |
| 24 | 6168810462042629 |