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 | 12 |
3 | 4921 |
4 | 51127323835 |
5 | 218857981551141835113634 |
6 | 310572853467235677965363821819928450852019 |
7 | 1425475594007632231129760415319272779790434025012566981847673007772802 |