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 | 0 |
| 2 | 52 |
| 3 | 10 |
| 4 | 160 |
| 5 | 520 |
| 6 | 100 |
| 7 | 1600 |
| 8 | 5200 |
| 9 | 1000 |
| 10 | 16000 |
| 11 | 52000 |
| 12 | 10000 |
| 13 | 160000 |
| 14 | 520000 |
| 15 | 100000 |
| 16 | 1600000 |
| 17 | 5200000 |
| 18 | 1000000 |
| 19 | 16000000 |
| 20 | 52000000 |
| 21 | 10000000 |
| 22 | 160000000 |
| 23 | 520000000 |
| 24 | 100000000 |
| 25 | 1600000000 |
| 26 | 5200000000 |
| 27 | 1000000000 |