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 | 1632 |
| 3 | 55706 |
| 4 | 1105531 |
| 5 | 46187510 |
| 6 | 1906300826 |
| 7 | 63350980838 |
| 8 | 2211348272559 |
| 9 | 81510059624659 |
| 10 | 2921136549256989 |
| 11 | 103683457156054557 |
| 12 | 3719547264451758684 |
| 13 | 133489746983350501721 |
| 14 | 4775013243230452400632 |
| 15 | 170915659747129027279021 |