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 | 60 |
| 3 | 2037 |
| 4 | 92187 |
| 5 | 5066952 |
| 6 | 322801089 |
| 7 | 23197971285 |
| 8 | 1848188250810 |
| 9 | 161297106209607 |
| 10 | 15285968218925460 |
| 11 | 1562519987561305566 |
| 12 | 171348519312001997550 |
| 13 | 20068058089211306151393 |
| 14 | 2500498134501774994768119 |
| 15 | 330350627790472265384885061 |
| 16 | 46136067767500181432129130897 |