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 | 3 |
| 3 | 4 |
| 4 | 4 |
| 5 | 5 |
| 6 | 8 |
| 7 | 9 |
| 8 | 14 |
| 9 | 63 |
| 10 | 91 |
| 11 | 132 |
| 12 | 605 |
| 13 | 753 |
| 14 | 993 |
| 15 | 17297 |
| 16 | 26120 |
| 17 | 28227 |
| 18 | 43466 |
| 19 | 123132 |
| 20 | 3551445 |
| 21 | 7243732 |
| 22 | 13958201 |
| 23 | 41249856 |
| 24 | 194184556 |
| 25 | 3261328035 |
| 26 | 13339681270 |
| 27 | 18470226192 |
| 28 | 23831447862 |
| 29 | 25356135862 |