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 | 4 |
| 2 | 1 |
| 3 | 3 |
| 4 | 2 |
| 5 | 2 |
| 6 | 7 |
| 7 | 12 |
| 8 | 27 |
| 9 | 62 |
| 10 | 160 |
| 11 | 387 |
| 12 | 951 |
| 13 | 2362 |
| 14 | 5895 |
| 15 | 14745 |
| 16 | 36892 |
| 17 | 92334 |
| 18 | 231171 |
| 19 | 578926 |
| 20 | 1450251 |
| 21 | 3633632 |
| 22 | 9105130 |
| 23 | 22816655 |
| 24 | 57178265 |
| 25 | 143291478 |
| 26 | 359102513 |
| 27 | 899959089 |
| 28 | 2255439374 |
| 29 | 5652518690 |
| 30 | 14166233267 |
| 31 | 35503222896 |
| 32 | 88977846175 |