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 | 0 |
| 4 | 2 |
| 5 | 1 |
| 6 | 0 |
| 7 | 9 |
| 8 | 9 |
| 9 | 1 |
| 10 | 0 |
| 11 | 44 |
| 12 | 216 |
| 13 | 44 |
| 14 | 1 |
| 15 | 0 |
| 16 | 265 |
| 17 | 7570 |
| 18 | 7570 |
| 19 | 265 |
| 20 | 1 |
| 21 | 0 |
| 22 | 1854 |
| 23 | 357435 |
| 24 | 1975560 |
| 25 | 357435 |
| 26 | 1854 |
| 27 | 1 |
| 28 | 0 |
| 29 | 14833 |
| 30 | 22040361 |
| 31 | 749649145 |
| 32 | 749649145 |
| 33 | 22040361 |
| 34 | 14833 |
| 35 | 1 |
| 36 | 0 |
| 37 | 133496 |
| 38 | 1721632024 |