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) |
|---|---|
| 4 | 1 |
| 5 | 2 |
| 6 | 7 |
| 7 | 16 |
| 8 | 40 |
| 9 | 98 |
| 10 | 237 |
| 11 | 574 |
| 12 | 1386 |
| 13 | 3346 |
| 14 | 8078 |
| 15 | 19502 |
| 16 | 47083 |
| 17 | 113668 |
| 18 | 274421 |
| 19 | 662510 |
| 20 | 1599442 |
| 21 | 3861396 |
| 22 | 9322235 |
| 23 | 22505868 |
| 24 | 54333972 |
| 25 | 131173812 |
| 26 | 316681596 |
| 27 | 764537004 |
| 28 | 1845755605 |
| 29 | 4456048214 |
| 30 | 10757852035 |
| 31 | 25971752284 |
| 32 | 62701356604 |