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 | 3 |
| 4 | 6 |
| 5 | 11 |
| 6 | 21 |
| 7 | 40 |
| 8 | 77 |
| 9 | 148 |
| 10 | 285 |
| 11 | 550 |
| 12 | 1061 |
| 13 | 2049 |
| 14 | 3957 |
| 15 | 7644 |
| 16 | 14768 |
| 17 | 28535 |
| 18 | 55138 |
| 19 | 106549 |
| 20 | 205902 |
| 21 | 397906 |
| 22 | 768967 |
| 23 | 1486070 |
| 24 | 2871932 |
| 25 | 5550233 |
| 26 | 10726300 |
| 27 | 20729542 |
| 28 | 40061784 |
| 29 | 77423250 |
| 30 | 149628008 |
| 31 | 289170949 |
| 32 | 558851751 |
| 33 | 1080037175 |
| 34 | 2087280839 |
| 35 | 4033881485 |