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 | 2 |
| 2 | 5 |
| 3 | 23 |
| 4 | 239 |
| 5 | 5828 |
| 6 | 342383 |
| 7 | 50110484 |
| 8 | 18757984046 |
| 9 | 18318289003448 |
| 10 | 47398244089264547 |
| 11 | 329030840161393127681 |
| 12 | 6190927493941741957366100 |
| 13 | 318447442589056401640929570896 |
| 14 | 45106654667152833836835578059359839 |