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) |
---|---|
0 | 0 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 52 |
5 | 540 |
6 | 6846 |
7 | 104832 |
8 | 1883848 |
9 | 38889360 |
10 | 907247770 |
11 | 23608391840 |
12 | 678039307452 |
13 | 21305543325248 |
14 | 727095737061526 |
15 | 26781816978470400 |
16 | 1059020025979194128 |
17 | 44746083421419997440 |
18 | 2011929587198990154162 |
19 | 95918808101232854969856 |