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 | 676 |
| 2 | 9991 |
| 3 | 284992 |
| 4 | 6683137 |
| 5 | 171041320 |
| 6 | 3320993180 |
| 7 | 64353451945 |
| 8 | 992794904591 |
| 9 | 15160526139045 |
| 10 | 192941078342371 |
| 11 | 2433696873065044 |
| 12 | 26454369332527825 |
| 13 | 285456371748779982 |
| 14 | 2719536243017821050 |
| 15 | 25745538460612968692 |