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 | 1 |
| 1 | 1111 |
| 2 | 1234321 |
| 3 | 1371330631 |
| 4 | 1523548331041 |
| 5 | 1692662195786551 |
| 6 | 1880547699518858161 |
| 7 | 2089288494165451416871 |
| 8 | 2321199517017816524143681 |
| 9 | 2578852663406794158323629591 |
| 10 | 2865105309044948309897552475601 |
| 11 | 3183131998348937572296180800392711 |
| 12 | 3536459650165669642821056869236301921 |
| 13 | 3929006671334058973174194181721531434231 |