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) |
|---|---|
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 1 |
| 10 | 1 |
| 11 | 126 |
| 12 | 1 |
| 13 | 462 |
| 14 | 1 |
| 15 | 1254 |
| 16 | 1 |
| 17 | 3003 |
| 18 | 1 |
| 19 | 6721 |
| 20 | 1 |
| 21 | 14443 |
| 22 | 126126 |
| 23 | 1 |
| 24 | 30251 |
| 25 | 1009008 |
| 26 | 1 |
| 27 | 62322 |
| 28 | 5309304 |
| 29 | 1 |
| 30 | 127024 |
| 31 | 23075052 |
| 32 | 1 |
| 33 | 257108 |
| 34 | 89791416 |
| 35 | 1 |
| 36 | 518092 |
| 37 | 325355316 |
| 38 | 488864376 |
| 39 | 1 |
| 40 | 1041029 |
| 41 | 1122632043 |
| 42 | 6844101264 |
| 43 | 1 |
| 44 | 2088043 |