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 | 5 |
| 5 | 10 |
| 6 | 18 |
| 7 | 34 |
| 8 | 67 |
| 9 | 131 |
| 10 | 261 |
| 11 | 520 |
| 12 | 1037 |
| 13 | 2073 |
| 14 | 4143 |
| 15 | 8283 |
| 16 | 16562 |
| 17 | 33121 |
| 18 | 66237 |
| 19 | 132471 |
| 20 | 264938 |
| 21 | 529870 |
| 22 | 1059740 |
| 23 | 2119473 |
| 24 | 4238941 |
| 25 | 8477878 |
| 26 | 16955748 |
| 27 | 33911492 |
| 28 | 67822978 |
| 29 | 135645949 |
| 30 | 271291894 |
| 31 | 542583782 |
| 32 | 1085167557 |
| 33 | 2170335106 |
| 34 | 4340670206 |
| 35 | 8681340402 |