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 | 11 |
| 2 | 244 |
| 3 | 1838 |
| 4 | 8303 |
| 5 | 27680 |
| 6 | 75418 |
| 7 | 177978 |
| 8 | 377149 |
| 9 | 735091 |
| 10 | 1340095 |
| 11 | 2313060 |
| 12 | 3814697 |
| 13 | 6053445 |
| 14 | 9294114 |
| 15 | 13867245 |
| 16 | 20179187 |
| 17 | 28722900 |
| 18 | 40089475 |
| 19 | 54980371 |
| 20 | 74220378 |
| 21 | 98771297 |
| 22 | 129746337 |
| 23 | 168425239 |
| 24 | 216270112 |
| 25 | 274941996 |