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) |
|---|---|
| 0 | 6 |
| 1 | 7 |
| 2 | 8 |
| 3 | 9 |
| 4 | 10 |
| 5 | 18 |
| 6 | 26 |
| 7 | 40 |
| 8 | 77 |
| 9 | 120 |
| 10 | 210 |
| 11 | 477 |
| 12 | 715 |
| 13 | 2227 |
| 14 | 3290 |
| 15 | 9065 |
| 16 | 17020 |
| 17 | 49915 |
| 18 | 139195 |
| 19 | 240465 |
| 20 | 721929 |
| 21 | 1124840 |
| 22 | 4455445 |
| 23 | 16319578 |
| 24 | 26683220 |
| 25 | 105655905 |
| 26 | 134879176 |
| 27 | 677868170 |
| 28 | 3290262264 |