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 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 7 |
| 7 | 1 |
| 8 | 11 |
| 9 | 20 |
| 10 | 17 |
| 11 | 1 |
| 12 | 259 |
| 13 | 1 |
| 14 | 43 |
| 15 | 506 |
| 16 | 549 |
| 17 | 1 |
| 18 | 2816 |
| 19 | 151 |
| 20 | 5331 |
| 21 | 6778 |
| 22 | 289 |
| 23 | 1 |
| 24 | 110880 |
| 25 | 18037 |
| 26 | 755 |
| 27 | 124342 |
| 28 | 155949 |
| 29 | 1 |
| 30 | 1310680 |
| 31 | 2975 |
| 32 | 1213179 |
| 33 | 1821962 |
| 34 | 5169 |
| 35 | 2697343 |
| 36 | 33280848 |
| 37 | 506383 |
| 38 | 1416031 |
| 39 | 32030858 |
| 40 | 106878261 |
| 41 | 62159 |
| 42 | 295708904 |
| 43 | 1 |