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 | 41 |
| 1 | 1513 |
| 2 | 19689 |
| 3 | 175465 |
| 4 | 1287657 |
| 5 | 8420713 |
| 6 | 51126249 |
| 7 | 295141225 |
| 8 | 1644285417 |
| 9 | 8927926633 |
| 10 | 47563308009 |
| 11 | 249806529385 |
| 12 | 1297882995177 |
| 13 | 6687496584553 |
| 14 | 34237868091369 |
| 15 | 174415093507945 |
| 16 | 885051189224937 |
| 17 | 4477377106010473 |
| 18 | 22596025278436329 |
| 19 | 113818651291052905 |