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 | 3 |
| 2 | 33 |
| 3 | 547 |
| 4 | 11713 |
| 5 | 309411 |
| 6 | 9763393 |
| 7 | 359046339 |
| 8 | 15096500481 |
| 9 | 714852041923 |
| 10 | 37660464739681 |
| 11 | 2185503641764323 |
| 12 | 138548894120306881 |
| 13 | 9527726662032987747 |
| 14 | 706481006206076565633 |
| 15 | 56192761405186331759491 |