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 | 2 |
| 2 | 5 |
| 3 | 29 |
| 4 | 199 |
| 5 | 2309 |
| 6 | 30029 |
| 7 | 510481 |
| 8 | 9699667 |
| 9 | 223092827 |
| 10 | 6469693189 |
| 11 | 200560490057 |
| 12 | 7420738134751 |
| 13 | 304250263527209 |
| 14 | 13082761331669941 |
| 15 | 614889782588491343 |
| 16 | 32589158477190044657 |
| 17 | 1922760350154212638963 |
| 18 | 117288381359406970983181 |
| 19 | 7858321551080267055878989 |