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 | 0 |
| 2 | 1 |
| 3 | 4 |
| 4 | 25 |
| 5 | 52 |
| 6 | 170 |
| 7 | 280 |
| 8 | 674 |
| 9 | 984 |
| 10 | 1979 |
| 11 | 2684 |
| 12 | 4795 |
| 13 | 6188 |
| 14 | 10164 |
| 15 | 12656 |
| 16 | 19524 |
| 17 | 23664 |
| 18 | 34773 |
| 19 | 41268 |
| 20 | 58333 |
| 21 | 68068 |
| 22 | 93214 |
| 23 | 107272 |
| 24 | 143078 |
| 25 | 162760 |
| 26 | 212303 |
| 27 | 239148 |
| 28 | 306047 |
| 29 | 341852 |
| 30 | 430312 |
| 31 | 477152 |
| 32 | 592008 |
| 33 | 652256 |
| 34 | 799017 |
| 35 | 875364 |
| 36 | 1060257 |
| 37 | 1155732 |
| 38 | 1385746 |
| 39 | 1503736 |