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 | 6 |
| 3 | 15 |
| 4 | 36 |
| 5 | 77 |
| 6 | 162 |
| 7 | 327 |
| 8 | 648 |
| 9 | 1262 |
| 10 | 2430 |
| 11 | 4629 |
| 12 | 8748 |
| 13 | 16414 |
| 14 | 30618 |
| 15 | 56819 |
| 16 | 104976 |
| 17 | 193187 |
| 18 | 354294 |
| 19 | 647747 |
| 20 | 1180980 |
| 21 | 2147793 |
| 22 | 3897234 |
| 23 | 7057034 |
| 24 | 12754584 |
| 25 | 23012070 |
| 26 | 41452398 |
| 27 | 74559107 |
| 28 | 133923132 |
| 29 | 240246014 |
| 30 | 430467210 |
| 31 | 770444114 |
| 32 | 1377495072 |