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 | 22 |
| 3 | 42 |
| 4 | 1002 |
| 5 | 2436 |
| 6 | 3718 |
| 7 | 5604 |
| 8 | 12310 |
| 9 | 37338 |
| 10 | 53174 |
| 11 | 105558 |
| 12 | 204226 |
| 13 | 715220 |
| 14 | 1300156 |
| 15 | 1741630 |
| 16 | 2323520 |
| 17 | 4087968 |
| 18 | 7089500 |
| 19 | 12132164 |
| 20 | 15796476 |
| 21 | 26543660 |
| 22 | 34262962 |
| 23 | 92669720 |
| 24 | 118114304 |
| 25 | 150198136 |
| 26 | 190569292 |
| 27 | 384276336 |
| 28 | 483502844 |