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) |
|---|---|
| 3 | 1 |
| 4 | 2 |
| 5 | 5 |
| 6 | 10 |
| 7 | 22 |
| 8 | 45 |
| 9 | 97 |
| 10 | 206 |
| 11 | 450 |
| 12 | 982 |
| 13 | 2178 |
| 14 | 4849 |
| 15 | 10904 |
| 16 | 24630 |
| 17 | 56010 |
| 18 | 127911 |
| 19 | 293546 |
| 20 | 676156 |
| 21 | 1563371 |
| 22 | 3626148 |
| 23 | 8436378 |
| 24 | 19680276 |
| 25 | 46026617 |
| 26 | 107890608 |
| 27 | 253450710 |
| 28 | 596572386 |
| 29 | 1406818758 |
| 30 | 3323236237 |
| 31 | 7862958390 |
| 32 | 18632325318 |
| 33 | 44214569099 |
| 34 | 105061603968 |