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 | 1 |
| 2 | 4 |
| 3 | 19 |
| 4 | 54 |
| 5 | 145 |
| 6 | 350 |
| 7 | 726 |
| 8 | 1462 |
| 9 | 2710 |
| 10 | 4846 |
| 11 | 8166 |
| 12 | 13730 |
| 13 | 21741 |
| 14 | 34350 |
| 15 | 52488 |
| 16 | 79518 |
| 17 | 117141 |
| 18 | 172224 |
| 19 | 246993 |
| 20 | 353464 |
| 21 | 496721 |
| 22 | 694952 |
| 23 | 958374 |
| 24 | 1318174 |
| 25 | 1789077 |
| 26 | 2420888 |
| 27 | 3243045 |
| 28 | 4329098 |
| 29 | 5728140 |
| 30 | 7557906 |
| 31 | 9893327 |
| 32 | 12913820 |
| 33 | 16746136 |