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 | 321 |
| 3 | 63879 |
| 4 | 6265151 |
| 5 | 6921510 |
| 6 | 9239188 |
| 7 | 23156113 |
| 8 | 26854544 |
| 9 | 35917576 |
| 10 | 45591317 |
| 11 | 51307313 |
| 12 | 52260254 |
| 13 | 53855078 |
| 14 | 71731838 |
| 15 | 118305552 |
| 16 | 124220571 |
| 17 | 124234464 |
| 18 | 150767861 |
| 19 | 170448863 |
| 20 | 192850264 |