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 | 2 |
| 1 | 32 |
| 2 | 512 |
| 3 | 8192 |
| 4 | 131072 |
| 5 | 2097152 |
| 6 | 33554432 |
| 7 | 536870912 |
| 8 | 8589934592 |
| 9 | 137438953472 |
| 10 | 2199023255552 |
| 11 | 35184372088832 |
| 12 | 562949953421312 |
| 13 | 9007199254740992 |
| 14 | 144115188075855872 |
| 15 | 2305843009213693952 |