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 | 11 |
| 1 | 243 |
| 2 | 5357 |
| 3 | 118097 |
| 4 | 2603491 |
| 5 | 57394899 |
| 6 | 1265291269 |
| 7 | 27893802817 |
| 8 | 614928953243 |
| 9 | 13556330774163 |
| 10 | 298854205984829 |
| 11 | 6588348862440401 |
| 12 | 145242529179673651 |
| 13 | 3201923990815260723 |
| 14 | 70587570327115409557 |
| 15 | 1556128471187354270977 |
| 16 | 34305413936448909371051 |