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 | 3 |
| 3 | 6 |
| 4 | 14 |
| 5 | 27 |
| 6 | 60 |
| 7 | 117 |
| 8 | 246 |
| 9 | 490 |
| 10 | 1002 |
| 11 | 1998 |
| 12 | 4053 |
| 13 | 8088 |
| 14 | 16284 |
| 15 | 32559 |
| 16 | 65330 |
| 17 | 130626 |
| 18 | 261726 |
| 19 | 523374 |
| 20 | 1047690 |
| 21 | 2095314 |
| 22 | 4192479 |
| 23 | 8384808 |
| 24 | 16773552 |
| 25 | 33546736 |
| 26 | 67101273 |
| 27 | 134202258 |
| 28 | 268420086 |
| 29 | 536839446 |
| 30 | 1073710914 |
| 31 | 2147420250 |
| 32 | 4294904430 |
| 33 | 8589807438 |