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 | 3 |
| 4 | 5 |
| 5 | 8 |
| 6 | 15 |
| 7 | 27 |
| 8 | 54 |
| 9 | 110 |
| 10 | 238 |
| 11 | 526 |
| 12 | 1211 |
| 13 | 2839 |
| 14 | 6825 |
| 15 | 16655 |
| 16 | 41315 |
| 17 | 103663 |
| 18 | 263086 |
| 19 | 673604 |
| 20 | 1739155 |
| 21 | 4521632 |
| 22 | 11831735 |
| 23 | 31134338 |
| 24 | 82352098 |
| 25 | 218837877 |
| 26 | 584018065 |
| 27 | 1564679863 |
| 28 | 4207224730 |
| 29 | 11350583175 |
| 30 | 30718054693 |
| 31 | 83373960954 |
| 32 | 226907180850 |
| 33 | 619118327796 |