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 | 8 |
| 2 | 32 |
| 3 | 512 |
| 4 | 2048 |
| 5 | 16384 |
| 6 | 65536 |
| 7 | 2097152 |
| 8 | 8388608 |
| 9 | 67108864 |
| 10 | 268435456 |
| 11 | 4294967296 |
| 12 | 17179869184 |
| 13 | 137438953472 |
| 14 | 549755813888 |
| 15 | 35184372088832 |
| 16 | 140737488355328 |
| 17 | 1125899906842624 |
| 18 | 4503599627370496 |
| 19 | 72057594037927936 |