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 | 1 |
| 2 | 5 |
| 3 | 3 |
| 4 | 2 |
| 5 | 22 |
| 6 | 19 |
| 7 | 4020 |
| 8 | 4280 |
| 9 | 22198 |
| 10 | 22194 |
| 11 | 22193 |
| 12 | 31400 |
| 13 | 221101 |
| 14 | 360648 |
| 15 | 370260 |
| 16 | 604062 |
| 17 | 604060 |
| 18 | 1357201 |
| 19 | 2010734 |
| 20 | 2010733 |
| 21 | 4652353 |
| 22 | 4652352 |
| 23 | 17051708 |
| 24 | 17051707 |
| 25 | 20831329 |
| 26 | 20831323 |
| 27 | 47326699 |
| 28 | 47326692 |
| 29 | 123346277 |
| 30 | 256526120 |
| 31 | 428045488 |
| 32 | 436273045 |
| 33 | 436273038 |