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 | 13 |
| 3 | 82 |
| 4 | 354 |
| 5 | 1200 |
| 6 | 3432 |
| 7 | 8646 |
| 8 | 19734 |
| 9 | 41613 |
| 10 | 82225 |
| 11 | 153868 |
| 12 | 274924 |
| 13 | 472056 |
| 14 | 782952 |
| 15 | 1259700 |
| 16 | 1972884 |
| 17 | 3016497 |
| 18 | 4513773 |
| 19 | 6624046 |
| 20 | 9550750 |
| 21 | 13550680 |
| 22 | 18944640 |
| 23 | 26129610 |
| 24 | 35592570 |
| 25 | 47926125 |
| 26 | 63846081 |
| 27 | 84211128 |
| 28 | 110044792 |
| 29 | 142559824 |
| 30 | 183185200 |
| 31 | 233595912 |