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 | 3 |
| 5 | 6 |
| 6 | 11 |
| 7 | 23 |
| 8 | 46 |
| 9 | 97 |
| 10 | 198 |
| 11 | 406 |
| 12 | 811 |
| 13 | 1613 |
| 14 | 3155 |
| 15 | 6141 |
| 16 | 11822 |
| 17 | 22652 |
| 18 | 43052 |
| 19 | 81441 |
| 20 | 153031 |
| 21 | 286187 |
| 22 | 532067 |
| 23 | 984509 |
| 24 | 1811933 |
| 25 | 3319129 |
| 26 | 6049533 |
| 27 | 10975090 |
| 28 | 19815546 |
| 29 | 35613904 |
| 30 | 63710026 |
| 31 | 113457471 |
| 32 | 201128376 |
| 33 | 354949071 |