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 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 16 |
| 5 | 32 |
| 6 | 63 |
| 7 | 123 |
| 8 | 239 |
| 9 | 463 |
| 10 | 895 |
| 11 | 1728 |
| 12 | 3334 |
| 13 | 6430 |
| 14 | 12398 |
| 15 | 23902 |
| 16 | 46077 |
| 17 | 88821 |
| 18 | 171213 |
| 19 | 330029 |
| 20 | 636157 |
| 21 | 1226238 |
| 22 | 2363656 |
| 23 | 4556100 |
| 24 | 8782172 |
| 25 | 16928188 |
| 26 | 32630139 |
| 27 | 62896623 |
| 28 | 121237147 |
| 29 | 233692123 |
| 30 | 450456059 |
| 31 | 868281980 |
| 32 | 1673667338 |
| 33 | 3226097530 |
| 34 | 6218502938 |