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 | 1 |
| 2 | 5 |
| 3 | 16 |
| 4 | 41 |
| 5 | 92 |
| 6 | 189 |
| 7 | 365 |
| 8 | 674 |
| 9 | 1204 |
| 10 | 2098 |
| 11 | 3588 |
| 12 | 6050 |
| 13 | 10093 |
| 14 | 16703 |
| 15 | 27476 |
| 16 | 44995 |
| 17 | 73440 |
| 18 | 119575 |
| 19 | 194345 |
| 20 | 315460 |
| 21 | 511576 |
| 22 | 829060 |
| 23 | 1342936 |
| 24 | 2174596 |
| 25 | 3520457 |
| 26 | 5698329 |
| 27 | 9222440 |
| 28 | 14924829 |
| 29 | 24151764 |
| 30 | 39081553 |