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 | 4 |
| 2 | 32 |
| 3 | 512 |
| 4 | 4096 |
| 5 | 131072 |
| 6 | 1048576 |
| 7 | 16777216 |
| 8 | 134217728 |
| 9 | 8589934592 |
| 10 | 68719476736 |
| 11 | 1099511627776 |
| 12 | 8796093022208 |
| 13 | 281474976710656 |
| 14 | 2251799813685248 |
| 15 | 36028797018963968 |
| 16 | 288230376151711744 |