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 | 17 |
| 2 | 473 |
| 3 | 54953 |
| 4 | 515057 |
| 5 | 42784577 |
| 6 | 386371913 |
| 7 | 31364282393 |
| 8 | 22875718713137 |
| 9 | 205886837127353 |
| 10 | 150094360419092177 |
| 11 | 12157661061010417697 |
| 12 | 109418971539326314793 |
| 13 | 8862937838177524385273 |
| 14 | 6461081871212274789450257 |
| 15 | 4710128696093323330314756713 |