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 | 256 |
| 2 | 5157 |
| 3 | 43681 |
| 4 | 232275 |
| 5 | 919413 |
| 6 | 2964416 |
| 7 | 8216484 |
| 8 | 20273247 |
| 9 | 45611500 |
| 10 | 95196145 |
| 11 | 186686721 |
| 12 | 347374261 |
| 13 | 617994573 |
| 14 | 1057577400 |
| 15 | 1749504272 |
| 16 | 2808961221 |
| 17 | 4391985888 |
| 18 | 6706321909 |
| 19 | 10024306825 |
| 20 | 14698033119 |
| 21 | 21177035341 |
| 22 | 30028769640 |