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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 8 |
| 6 | 16 |
| 7 | 30 |
| 8 | 60 |
| 9 | 118 |
| 10 | 232 |
| 11 | 456 |
| 12 | 897 |
| 13 | 1762 |
| 14 | 3465 |
| 15 | 6812 |
| 16 | 13392 |
| 17 | 26328 |
| 18 | 51760 |
| 19 | 101756 |
| 20 | 200048 |
| 21 | 393284 |
| 22 | 773176 |
| 23 | 1520024 |
| 24 | 2988289 |
| 25 | 5874820 |
| 26 | 11549593 |
| 27 | 22705902 |
| 28 | 44638628 |
| 29 | 87757232 |
| 30 | 172526176 |
| 31 | 339177530 |
| 32 | 666805468 |
| 33 | 1310905034 |
| 34 | 2577171440 |
| 35 | 5066585648 |