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 | 3 |
| 2 | 8 |
| 3 | 25 |
| 4 | 60 |
| 5 | 175 |
| 6 | 400 |
| 7 | 1125 |
| 8 | 2500 |
| 9 | 6875 |
| 10 | 15000 |
| 11 | 40625 |
| 12 | 87500 |
| 13 | 234375 |
| 14 | 500000 |
| 15 | 1328125 |
| 16 | 2812500 |
| 17 | 7421875 |
| 18 | 15625000 |
| 19 | 41015625 |
| 20 | 85937500 |
| 21 | 224609375 |
| 22 | 468750000 |
| 23 | 1220703125 |
| 24 | 2539062500 |
| 25 | 6591796875 |
| 26 | 13671875000 |
| 27 | 35400390625 |