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 | 81 |
| 2 | 1632 |
| 3 | 52889 |
| 4 | 1519630 |
| 5 | 45865837 |
| 6 | 1368968852 |
| 7 | 41030621948 |
| 8 | 1229127412701 |
| 9 | 36837288191422 |
| 10 | 1103993847036050 |
| 11 | 33088254114520559 |
| 12 | 991712287397354032 |
| 13 | 29723613829882860702 |
| 14 | 890879134522839275761 |
| 15 | 26701570968782131551720 |