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 | 15 |
| 3 | 1 |
| 4 | 175 |
| 5 | 30 |
| 6 | 1 |
| 7 | 1750 |
| 8 | 575 |
| 9 | 45 |
| 10 | 1 |
| 11 | 15750 |
| 12 | 8750 |
| 13 | 1200 |
| 14 | 60 |
| 15 | 1 |
| 16 | 131250 |
| 17 | 114625 |
| 18 | 24375 |
| 19 | 2050 |
| 20 | 75 |
| 21 | 1 |
| 22 | 1031250 |
| 23 | 1347500 |
| 24 | 414750 |
| 25 | 52000 |
| 26 | 3125 |
| 27 | 90 |
| 28 | 1 |
| 29 | 7734375 |
| 30 | 14575000 |
| 31 | 6208125 |
| 32 | 1084875 |
| 33 | 95000 |
| 34 | 4425 |
| 35 | 105 |
| 36 | 1 |
| 37 | 55859375 |
| 38 | 147468750 |
| 39 | 84184375 |