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 | 128 |
| 2 | 16384 |
| 3 | 371641 |
| 4 | 9205575 |
| 5 | 151788273 |
| 6 | 2748122586 |
| 7 | 43645304766 |
| 8 | 733660344149 |
| 9 | 11722251157012 |
| 10 | 192737455311869 |
| 11 | 3101316117820858 |
| 12 | 50582965637175513 |
| 13 | 817179337255729430 |
| 14 | 13284346442987716235 |
| 15 | 215031581266863776172 |