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 | 43 |
| 3 | 1333 |
| 4 | 63321 |
| 5 | 4034341 |
| 6 | 321994723 |
| 7 | 30869387193 |
| 8 | 3454384526353 |
| 9 | 441903886812721 |
| 10 | 63608031487665171 |
| 11 | 10174227287873082853 |
| 12 | 1790258521269694523113 |
| 13 | 343669522619597368671933 |
| 14 | 71473405251333054552561091 |
| 15 | 16008271911444915765782477041 |
| 16 | 3841639137772270982094393928353 |