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 | 5 |
2 | 30 |
3 | 200 |
4 | 1550 |
5 | 14000 |
6 | 144500 |
7 | 1662500 |
8 | 20952500 |
9 | 286437500 |
10 | 4221312500 |
11 | 66703437500 |
12 | 1124194062500 |
13 | 20109785937500 |
14 | 380209901562500 |
15 | 7571141773437500 |
16 | 158312671414062500 |
17 | 3466819503710937500 |
18 | 79316483272226562500 |
19 | 1891747084452148437500 |
20 | 46942864023040039062500 |