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 | 8 |
| 1 | 44 |
| 2 | 224 |
| 3 | 1124 |
| 4 | 5624 |
| 5 | 28124 |
| 6 | 140624 |
| 7 | 703124 |
| 8 | 3515624 |
| 9 | 17578124 |
| 10 | 87890624 |
| 11 | 439453124 |
| 12 | 2197265624 |
| 13 | 10986328124 |
| 14 | 54931640624 |
| 15 | 274658203124 |
| 16 | 1373291015624 |
| 17 | 6866455078124 |
| 18 | 34332275390624 |
| 19 | 171661376953124 |
| 20 | 858306884765624 |