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 | 20 |
2 | 250 |
3 | 2520 |
4 | 22470 |
5 | 185304 |
6 | 1448580 |
7 | 10895280 |
8 | 79603590 |
9 | 568642360 |
10 | 3989693708 |
11 | 27585223120 |
12 | 188421602460 |
13 | 1273887926640 |
14 | 8537435428680 |
15 | 56785445628768 |
16 | 375214194393030 |
17 | 2464893754074360 |
18 | 16109413813808700 |
19 | 104800627073105040 |
20 | 678975482198143284 |
21 | 4382524104695787600 |