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 | 123 |
| 2 | 34276 |
| 3 | 10894561 |
| 4 | 3625549353 |
| 5 | 1234496016491 |
| 6 | 425588878897051 |
| 7 | 147716667776449068 |
| 8 | 51459452422736225401 |
| 9 | 17962375573820654607091 |
| 10 | 6276640725138515237851803 |
| 11 | 2194525820018749279915303361 |
| 12 | 767517569389298359121889024076 |
| 13 | 268477550040900162034429991254323 |