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 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 150 |
| 5 | 1342 |
| 6 | 2366 |
| 7 | 1628328 |
| 8 | 942 |
| 9 | 9 |
| 10 | 21 |
| 11 | 34420 |
| 12 | 146353232490 |
| 13 | 3 |
| 14 | 1 |
| 15 | 810589181792 |
| 16 | 4268555 |
| 17 | 623525228930150853776330584 |
| 18 | 1 |
| 19 | 65647507266341 |
| 20 | 1 |
| 21 | 1 |
| 22 | 2 |
| 23 | 15 |
| 24 | 2 |
| 25 | 9774000 |
| 26 | 1 |
| 27 | 328 |
| 28 | 75 |
| 29 | 1 |
| 30 | 3 |
| 31 | 44 |
| 32 | 7 |
| 33 | 1 |
| 34 | 2 |
| 35 | 1 |
| 36 | 1 |
| 37 | 3 |
| 38 | 16353757 |
| 39 | 2 |
| 40 | 5036 |
| 41 | 1 |
| 42 | 23 |
| 43 | 23 |
| 44 | 1 |
| 45 | 216 |
| 46 | 1218482865908370401 |