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 | 5 |
| 2 | 20 |
| 3 | 75 |
| 4 | 50 |
| 5 | 450 |
| 6 | 1375 |
| 7 | 500 |
| 8 | 750 |
| 9 | 10500 |
| 10 | 27500 |
| 11 | 6875 |
| 12 | 5625 |
| 13 | 13125 |
| 14 | 249375 |
| 15 | 577500 |
| 16 | 110000 |
| 17 | 61875 |
| 18 | 78750 |
| 19 | 249375 |
| 20 | 5985000 |
| 21 | 12512500 |
| 22 | 1925000 |
| 23 | 825000 |
| 24 | 721875 |
| 25 | 1246875 |
| 26 | 4987500 |
| 27 | 144637500 |
| 28 | 277062500 |
| 29 | 35750000 |
| 30 | 12375000 |
| 31 | 8250000 |
| 32 | 9796875 |
| 33 | 21375000 |
| 34 | 103312500 |
| 35 | 3512625000 |
| 36 | 6233906250 |
| 37 | 692656250 |