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 | 199195047359 |
| 2 | 220323712895 |
| 3 | 259305479279 |
| 4 | 325451502935 |
| 5 | 472765412735 |
| 6 | 491091874559 |
| 7 | 498357905759 |
| 8 | 517270926095 |
| 9 | 609349053599 |
| 10 | 769658803199 |
| 11 | 832015353455 |
| 12 | 853833772799 |
| 13 | 898951575599 |
| 14 | 962940227039 |
| 15 | 1087044101759 |
| 16 | 1122857491679 |
| 17 | 1249765950719 |
| 18 | 1297923596255 |