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 | 16 |
| 2 | 90 |
| 3 | 344 |
| 4 | 1082 |
| 5 | 3036 |
| 6 | 7918 |
| 7 | 19648 |
| 8 | 47058 |
| 9 | 109796 |
| 10 | 251126 |
| 11 | 565512 |
| 12 | 1257754 |
| 13 | 2769196 |
| 14 | 6046014 |
| 15 | 13107536 |
| 16 | 28246370 |
| 17 | 60555636 |
| 18 | 129237382 |
| 19 | 274727320 |
| 20 | 581960106 |
| 21 | 1228931516 |
| 22 | 2587886030 |
| 23 | 5435818464 |
| 24 | 11391730162 |
| 25 | 23823647236 |
| 26 | 49727668758 |
| 27 | 103616086568 |