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 | 1 |
| 2 | 277 |
| 3 | 11568 |
| 4 | 671452 |
| 5 | 36212912 |
| 6 | 1968061359 |
| 7 | 106717857552 |
| 8 | 5778059258273 |
| 9 | 312573095738121 |
| 10 | 16898643737922425 |
| 11 | 913264073225048477 |
| 12 | 49345410349072594251 |
| 13 | 2665888554266786412238 |
| 14 | 144014204839657901069783 |