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 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 10 |
| 6 | 20 |
| 7 | 35 |
| 8 | 70 |
| 9 | 125 |
| 10 | 250 |
| 11 | 450 |
| 12 | 900 |
| 13 | 1625 |
| 14 | 3250 |
| 15 | 5875 |
| 16 | 11750 |
| 17 | 21250 |
| 18 | 42500 |
| 19 | 76875 |
| 20 | 153750 |
| 21 | 278125 |
| 22 | 556250 |
| 23 | 1006250 |
| 24 | 2012500 |
| 25 | 3640625 |
| 26 | 7281250 |
| 27 | 13171875 |
| 28 | 26343750 |
| 29 | 47656250 |
| 30 | 95312500 |
| 31 | 172421875 |
| 32 | 344843750 |