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 | 11 |
| 2 | 67 |
| 3 | 297 |
| 4 | 1068 |
| 5 | 3300 |
| 6 | 9076 |
| 7 | 22748 |
| 8 | 52834 |
| 9 | 115126 |
| 10 | 237590 |
| 11 | 467842 |
| 12 | 884236 |
| 13 | 1611908 |
| 14 | 2845492 |
| 15 | 4880668 |
| 16 | 8157227 |
| 17 | 13316953 |
| 18 | 21280337 |
| 19 | 33346963 |
| 20 | 51325352 |
| 21 | 77699128 |
| 22 | 115837592 |
| 23 | 170260168 |
| 24 | 246965732 |
| 25 | 353839564 |
| 26 | 501152588 |
| 27 | 702169700 |
| 28 | 973886344 |
| 29 | 1337915096 |