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 | 4 |
2 | 40 |
3 | 460 |
4 | 5940 |
5 | 82060 |
6 | 1188140 |
7 | 17792060 |
8 | 273299640 |
9 | 4282438360 |
10 | 68184114040 |
11 | 1099949668960 |
12 | 17940069922740 |
13 | 295334808497460 |
14 | 4900888478007740 |
15 | 81893191113037760 |
16 | 1376770060020516140 |
17 | 23270650287508521860 |
18 | 395214289798485048340 |
19 | 6740892510015481994360 |
20 | 115419341703097589417340 |