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 | 2 |
| 4 | 4 |
| 5 | 8 |
| 6 | 11 |
| 7 | 19 |
| 8 | 31 |
| 9 | 50 |
| 10 | 88 |
| 11 | 146 |
| 12 | 241 |
| 13 | 407 |
| 14 | 675 |
| 15 | 1118 |
| 16 | 1871 |
| 17 | 3102 |
| 18 | 5175 |
| 19 | 8633 |
| 20 | 14394 |
| 21 | 23999 |
| 22 | 40002 |
| 23 | 66666 |
| 24 | 111044 |
| 25 | 185192 |
| 26 | 308442 |
| 27 | 514138 |
| 28 | 857283 |
| 29 | 1428537 |
| 30 | 2381021 |