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 | 0 |
| 1 | 1 |
| 2 | 16384 |
| 3 | 4782969 |
| 4 | 268435456 |
| 5 | 6103515625 |
| 6 | 78364164096 |
| 7 | 678223072849 |
| 8 | 4398046511104 |
| 9 | 22876792454961 |
| 10 | 100000000000000 |
| 11 | 379749833583241 |
| 12 | 1283918464548864 |
| 13 | 3937376385699289 |
| 14 | 11112006825558016 |
| 15 | 29192926025390625 |
| 16 | 72057594037927936 |
| 17 | 168377826559400929 |
| 18 | 374813367582081024 |