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 | 19131872 |
| 2 | 20809344 |
| 3 | 20811488 |
| 4 | 21257636 |
| 5 | 22732948 |
| 6 | 172186880 |
| 7 | 1549681952 |
| 8 | 2870345516 |
| 9 | 2870345520 |
| 10 | 2871907160 |
| 11 | 2872143356 |
| 12 | 2872251248 |
| 13 | 13947137600 |
| 14 | 125524238432 |
| 15 | 496384984980 |
| 16 | 516044091344 |
| 17 | 530010360824 |
| 18 | 530030555544 |
| 19 | 530031618464 |
| 20 | 530032461188 |
| 21 | 530163415832 |
| 22 | 530260860088 |