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 | 9 |
| 1 | 28 |
| 2 | 37 |
| 3 | 65 |
| 4 | 102 |
| 5 | 881 |
| 6 | 983 |
| 7 | 1864 |
| 8 | 2847 |
| 9 | 10405 |
| 10 | 190137 |
| 11 | 580816 |
| 12 | 770953 |
| 13 | 1351769 |
| 14 | 2122722 |
| 15 | 18333545 |
| 16 | 20456267 |
| 17 | 38789812 |
| 18 | 59246079 |
| 19 | 216528049 |
| 20 | 3956750961 |
| 21 | 12086780932 |
| 22 | 16043531893 |
| 23 | 28130312825 |
| 24 | 44173844718 |
| 25 | 381521070569 |
| 26 | 425694915287 |
| 27 | 807215985856 |