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 | 1 |
| 2 | 2 |
| 3 | 8 |
| 4 | 128 |
| 5 | 32768 |
| 6 | 2147483648 |
| 7 | 9223372036854775808 |
| 8 | 170141183460469231731687303715884105728 |
| 9 | 57896044618658097711785492504343953926634992332820282019728792003956564819968 |