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) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 3 |
| 5 | 1 |
| 6 | 0 |
| 7 | 14 |
| 8 | 9 |
| 9 | 1 |
| 10 | 0 |
| 11 | 90 |
| 12 | 83 |
| 13 | 18 |
| 14 | 1 |
| 15 | 0 |
| 16 | 744 |
| 17 | 870 |
| 18 | 275 |
| 19 | 30 |
| 20 | 1 |
| 21 | 0 |
| 22 | 7560 |
| 23 | 10474 |
| 24 | 4275 |
| 25 | 685 |
| 26 | 45 |
| 27 | 1 |
| 28 | 0 |
| 29 | 91440 |
| 30 | 143892 |
| 31 | 70924 |
| 32 | 14805 |
| 33 | 1435 |
| 34 | 63 |
| 35 | 1 |
| 36 | 0 |
| 37 | 1285200 |
| 38 | 2233356 |
| 39 | 1274196 |
| 40 | 324289 |
| 41 | 41160 |
| 42 | 2674 |
| 43 | 84 |
| 44 | 1 |