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 | 2 |
| 4 | 1 |
| 5 | 6 |
| 6 | 6 |
| 7 | 12 |
| 8 | 2 |
| 9 | 15 |
| 10 | 16 |
| 11 | 0 |
| 12 | 49 |
| 13 | 299 |
| 14 | 220 |
| 15 | 882 |
| 16 | 252 |
| 17 | 2176 |
| 18 | 166 |
| 19 | 495 |
| 20 | 5720 |
| 21 | 5251 |
| 22 | 6065 |
| 23 | 28224 |
| 24 | 41650 |
| 25 | 106947 |
| 26 | 113288 |
| 27 | 256737 |
| 28 | 173841 |
| 29 | 26840 |
| 30 | 25379 |
| 31 | 444150 |
| 32 | 347278 |
| 33 | 1834953 |
| 34 | 8709610 |
| 35 | 4046544 |
| 36 | 2653673 |
| 37 | 31127545 |
| 38 | 47532000 |
| 39 | 50717205 |
| 40 | 147239197 |
| 41 | 97769672 |
| 42 | 37543458 |