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 | 513 |
| 2 | 19682 |
| 3 | 280182 |
| 4 | 14906455 |
| 5 | 676386984 |
| 6 | 822557039 |
| 7 | 8185328614 |
| 8 | 1835323405 |
| 9 | 147534349327 |
| 10 | 430099398783 |
| 11 | 746688111476 |
| 12 | 3054750102760 |
| 13 | 9430469115218 |
| 14 | 42562034654367 |
| 15 | 92084372092298 |
| 16 | 28307243117603 |
| 17 | 17362132628379 |
| 18 | 430275700643181 |
| 19 | 478910674129864 |
| 20 | 69114209866295 |