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 | 2 |
2 | 0 |
3 | 30 |
4 | 3135 |
5 | 3570 |
6 | 72930 |
7 | 1231230 |
8 | 14804790 |
9 | 497668710 |
10 | 14908423530 |
11 | 278196808890 |
12 | 12192694624110 |
13 | 550939666387110 |
14 | 21275256232500270 |
15 | 1458502323630662310 |
16 | 87988283090327810190 |
17 | 3254611619240885033130 |
18 | 261462818462495728868790 |
19 | 9965666894849284108299810 |
20 | 557940830126698960967415390 |
21 | 90544636506979071680577724410 |