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 | 6 |
| 2 | 20 |
| 3 | 50 |
| 4 | 104 |
| 5 | 190 |
| 6 | 314 |
| 7 | 478 |
| 8 | 679 |
| 9 | 908 |
| 10 | 1151 |
| 11 | 1390 |
| 12 | 1605 |
| 13 | 1776 |
| 14 | 1886 |
| 15 | 1924 |
| 16 | 1886 |
| 17 | 1776 |
| 18 | 1605 |
| 19 | 1390 |
| 20 | 1151 |
| 21 | 908 |
| 22 | 679 |
| 23 | 478 |
| 24 | 314 |
| 25 | 190 |
| 26 | 104 |
| 27 | 50 |
| 28 | 20 |
| 29 | 6 |
| 30 | 1 |