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 | 1 |
1 | 0 |
2 | 1 |
3 | 0 |
4 | 6 |
5 | 0 |
6 | 90 |
7 | 1 |
8 | 2520 |
9 | 72 |
10 | 113400 |
11 | 5940 |
12 | 7484401 |
13 | 617760 |
14 | 681084014 |
15 | 81081000 |
16 | 81730916280 |
17 | 13232419201 |
18 | 12505020896160 |
19 | 2639867731518 |
20 | 2376002176470000 |
21 | 633568693965570 |
22 | 548870403972290401 |
23 | 180329793856173720 |
24 | 151492831528555510516 |