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) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 13 |
| 5 | 28 |
| 6 | 58 |
| 7 | 116 |
| 8 | 229 |
| 9 | 456 |
| 10 | 924 |
| 11 | 1896 |
| 12 | 3898 |
| 13 | 7960 |
| 14 | 16084 |
| 15 | 32168 |
| 16 | 63845 |
| 17 | 126160 |
| 18 | 248968 |
| 19 | 491952 |
| 20 | 975388 |
| 21 | 1943536 |
| 22 | 3895336 |
| 23 | 7852688 |
| 24 | 15906874 |
| 25 | 32321264 |
| 26 | 65736728 |
| 27 | 133549136 |
| 28 | 270550228 |
| 29 | 545928688 |
| 30 | 1096685608 |
| 31 | 2193371216 |
| 32 | 4369711461 |
| 33 | 8679052960 |