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) |
---|---|
8 | 8 |
9 | 72 |
10 | 450 |
11 | 2420 |
12 | 12012 |
13 | 56784 |
14 | 259896 |
15 | 1162800 |
16 | 5116200 |
17 | 22225256 |
18 | 95585220 |
19 | 407785239 |
20 | 1728221950 |
21 | 7284060210 |
22 | 30558007920 |
23 | 127687306230 |
24 | 531713205764 |
25 | 2207528270000 |
26 | 9140975106900 |
27 | 37763141619645 |
28 | 155684014548300 |
29 | 640640532117270 |
30 | 2631842094963600 |