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 | 2 |
| 3 | 3 |
| 4 | 7 |
| 5 | 7 |
| 6 | 33 |
| 7 | 29 |
| 8 | 149 |
| 9 | 245 |
| 10 | 1230 |
| 11 | 1665 |
| 12 | 15973 |
| 13 | 18199 |
| 14 | 134482 |
| 15 | 376433 |
| 16 | 1415209 |
| 17 | 2634597 |
| 18 | 26534612 |
| 19 | 33499359 |
| 20 | 287002711 |
| 21 | 727425501 |
| 22 | 3332040944 |
| 23 | 5794658931 |
| 24 | 61120855045 |
| 25 | 93825569009 |
| 26 | 601444738252 |