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) |
|---|---|
| 1 | 19 |
| 2 | 361 |
| 3 | 1482 |
| 4 | 6084 |
| 5 | 16224 |
| 6 | 43264 |
| 7 | 92560 |
| 8 | 198025 |
| 9 | 369795 |
| 10 | 690561 |
| 11 | 1175034 |
| 12 | 1999396 |
| 13 | 3178672 |
| 14 | 5053504 |
| 15 | 7627464 |
| 16 | 11512449 |
| 17 | 16676595 |
| 18 | 24157225 |
| 19 | 33844690 |
| 20 | 47416996 |
| 21 | 64618224 |
| 22 | 88059456 |
| 23 | 117234312 |
| 24 | 156075049 |
| 25 | 203673379 |
| 26 | 265787809 |
| 27 | 340895730 |