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 | 4 |
| 4 | 7 |
| 5 | 14 |
| 6 | 26 |
| 7 | 51 |
| 8 | 97 |
| 9 | 189 |
| 10 | 365 |
| 11 | 709 |
| 12 | 1383 |
| 13 | 2683 |
| 14 | 5270 |
| 15 | 10220 |
| 16 | 20175 |
| 17 | 39130 |
| 18 | 77533 |
| 19 | 150438 |
| 20 | 298925 |
| 21 | 580328 |
| 22 | 1155661 |
| 23 | 2245004 |
| 24 | 4478413 |
| 25 | 8705686 |
| 26 | 17390359 |
| 27 | 33828704 |
| 28 | 67650909 |
| 29 | 131901368 |
| 30 | 263589730 |
| 31 | 515037942 |
| 32 | 1028483089 |