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 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 8 |
| 6 | 17 |
| 7 | 39 |
| 8 | 88 |
| 9 | 203 |
| 10 | 464 |
| 11 | 1056 |
| 12 | 2381 |
| 13 | 5344 |
| 14 | 11900 |
| 15 | 26381 |
| 16 | 58165 |
| 17 | 127713 |
| 18 | 279209 |
| 19 | 608213 |
| 20 | 1319985 |
| 21 | 2855275 |
| 22 | 6155981 |
| 23 | 13231553 |
| 24 | 28353787 |
| 25 | 60583959 |
| 26 | 129084369 |
| 27 | 274283708 |
| 28 | 581244959 |
| 29 | 1228514486 |
| 30 | 2589902750 |
| 31 | 5446168197 |