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 | 4194304 |
| 2 | 1977326743 |
| 3 | 100000000000 |
| 4 | 1792160394037 |
| 5 | 17592186044416 |
| 6 | 116490258898219 |
| 7 | 584318301411328 |
| 8 | 2384185791015625 |
| 9 | 8293509467471872 |
| 10 | 25408476896404831 |
| 11 | 70188843638032384 |
| 12 | 177917621779460413 |
| 13 | 419430400000000000 |
| 14 | 929293739471222707 |
| 15 | 1951354384207722496 |