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 | 11 |
| 2 | 101 |
| 3 | 2239 |
| 4 | 34297 |
| 5 | 43789 |
| 6 | 53549 |
| 7 | 535487 |
| 8 | 59897017 |
| 9 | 430784719 |
| 10 | 2549592677 |
| 11 | 2837138669 |
| 12 | 97969345967 |
| 13 | 100000000019 |
| 14 | 328096840219 |
| 15 | 4110739763869 |