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) |
---|---|
11 | 11 |
12 | 67452 |
13 | 48907716 |
14 | 14690700024 |
15 | 2705763420360 |
16 | 365758901988480 |
17 | 40063975278687360 |
18 | 3778762636904935680 |
19 | 319426407028867057920 |
20 | 24881574582258352358400 |
21 | 1822046744492620226380800 |