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 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 1 |
| 11 | 12 |
| 12 | 79 |
| 13 | 378 |
| 14 | 1471 |
| 15 | 4944 |
| 16 | 14893 |
| 17 | 41226 |
| 18 | 106762 |
| 19 | 262144 |
| 20 | 616666 |
| 21 | 1401292 |
| 22 | 3096514 |
| 23 | 6690448 |
| 24 | 14198086 |
| 25 | 29703676 |
| 26 | 61450327 |
| 27 | 126025204 |
| 28 | 256737233 |
| 29 | 520381366 |
| 30 | 1050777737 |
| 31 | 2115862624 |
| 32 | 4251885323 |
| 33 | 8531819446 |