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 | 262144 |
| 1 | 1000000000 |
| 2 | 68719476736 |
| 3 | 1207269217792 |
| 4 | 10578455953408 |
| 5 | 60716992766464 |
| 6 | 262144000000000 |
| 7 | 922190162669056 |
| 8 | 2779905883635712 |
| 9 | 7427658739644928 |
| 10 | 18014398509481984 |
| 11 | 40353607000000000 |
| 12 | 84590643846578176 |
| 13 | 167619550409708032 |
| 14 | 316478381828866048 |
| 15 | 572994802228616704 |