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 | 3 |
| 4 | 4 |
| 5 | 7 |
| 6 | 16 |
| 7 | 29 |
| 8 | 52 |
| 9 | 102 |
| 10 | 194 |
| 11 | 361 |
| 12 | 685 |
| 13 | 1301 |
| 14 | 2452 |
| 15 | 4633 |
| 16 | 8771 |
| 17 | 16577 |
| 18 | 31327 |
| 19 | 59241 |
| 20 | 112004 |
| 21 | 211724 |
| 22 | 400285 |
| 23 | 756786 |
| 24 | 1430710 |
| 25 | 2704817 |
| 26 | 5113647 |
| 27 | 9667590 |
| 28 | 18277014 |
| 29 | 34553692 |
| 30 | 65325542 |
| 31 | 123501151 |
| 32 | 233485250 |
| 33 | 441415867 |
| 34 | 834519021 |