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 | 2 |
| 2 | 22 |
| 3 | 46 |
| 4 | 206 |
| 5 | 214 |
| 6 | 70 |
| 7 | 496 |
| 8 | 2185 |
| 9 | 7215 |
| 10 | 19783 |
| 11 | 47458 |
| 12 | 102886 |
| 13 | 206061 |
| 14 | 386953 |
| 15 | 688784 |
| 16 | 1172655 |
| 17 | 1921632 |
| 18 | 3046700 |
| 19 | 4693133 |
| 20 | 7048602 |
| 21 | 10349707 |
| 22 | 14894334 |
| 23 | 21049108 |
| 24 | 29263715 |
| 25 | 40081693 |
| 26 | 54158684 |
| 27 | 72270348 |
| 28 | 95341262 |
| 29 | 124450340 |