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 | 0 |
3 | 0 |
4 | 24 |
5 | 180 |
6 | 960 |
7 | 8820 |
8 | 129024 |
9 | 2177280 |
10 | 32875200 |
11 | 533887200 |
12 | 9997827840 |
13 | 212133841920 |
14 | 4799669696640 |
15 | 114208231737600 |
16 | 2901190960926720 |
17 | 79007705121945600 |
18 | 2289453730357248000 |
19 | 69972073047194572800 |
20 | 2249392810263651532800 |