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 | 19 |
| 1 | 1801 |
| 2 | 249697 |
| 3 | 35842177 |
| 4 | 5159904769 |
| 5 | 743009863681 |
| 6 | 106993223294977 |
| 7 | 15407021789577217 |
| 8 | 2218611109320327169 |
| 9 | 319479999401581608961 |
| 10 | 46005119909741205651457 |
| 11 | 6624737266953695061344257 |
| 12 | 953962166440743626203987969 |