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 | 1 |
| 2 | 127 |
| 3 | 26609 |
| 4 | 5828185 |
| 5 | 1244027317 |
| 6 | 258054207727 |
| 7 | 52402156308977 |
| 8 | 10488803639337560 |
| 9 | 2079716852900452250 |
| 10 | 409870041643305514072 |
| 11 | 80466951297324661639450 |
| 12 | 15759844503630649015980996 |
| 13 | 3082231209190859509953543989 |
| 14 | 602325527248635884295374077954 |