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 | 2048 |
| 3 | 177146 |
| 4 | 4194304 |
| 5 | 48828126 |
| 6 | 362795008 |
| 7 | 1977326742 |
| 8 | 8589934592 |
| 9 | 31380882463 |
| 10 | 100000002048 |
| 11 | 285311670610 |
| 12 | 743004176384 |
| 13 | 1792160394038 |
| 14 | 4049565167616 |
| 15 | 8649707208396 |
| 16 | 17592186044416 |
| 17 | 34271896307634 |
| 18 | 64268047284224 |
| 19 | 116490258898218 |