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 | 6 |
| 2 | 45 |
| 3 | 10713 |
| 4 | 324564970 |
| 5 | 180179551708668257 |
| 6 | 66100039883449216745724149409859980 |
| 7 | 5970964373869392740489950614747811004676487208587055130790649750452409 |