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 | 2 |
| 3 | 1 |
| 4 | 5 |
| 5 | 8 |
| 6 | 24 |
| 7 | 40 |
| 8 | 133 |
| 9 | 218 |
| 10 | 736 |
| 11 | 1203 |
| 12 | 4135 |
| 13 | 6743 |
| 14 | 23452 |
| 15 | 38194 |
| 16 | 134043 |
| 17 | 218115 |
| 18 | 770864 |
| 19 | 1253614 |
| 20 | 4455462 |
| 21 | 7242629 |
| 22 | 25859380 |
| 23 | 42022984 |
| 24 | 150615223 |
| 25 | 244700887 |
| 26 | 879876040 |
| 27 | 1429252775 |
| 28 | 5153445895 |
| 29 | 8369948745 |
| 30 | 30251941860 |
| 31 | 49127900370 |