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 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 6 |
| 7 | 11 |
| 8 | 21 |
| 9 | 41 |
| 10 | 81 |
| 11 | 161 |
| 12 | 321 |
| 13 | 636 |
| 14 | 1261 |
| 15 | 2501 |
| 16 | 4961 |
| 17 | 9841 |
| 18 | 19521 |
| 19 | 38721 |
| 20 | 76806 |
| 21 | 152351 |
| 22 | 302201 |
| 23 | 599441 |
| 24 | 1189041 |
| 25 | 2358561 |
| 26 | 4678401 |
| 27 | 9279996 |
| 28 | 18407641 |
| 29 | 36513081 |
| 30 | 72426721 |
| 31 | 143664401 |
| 32 | 284970241 |
| 33 | 565262081 |
| 34 | 1121244166 |
| 35 | 2224080691 |
| 36 | 4411648301 |