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 | 6 |
3 | 20 |
4 | 70 |
5 | 254 |
6 | 948 |
7 | 3614 |
8 | 13990 |
9 | 54740 |
10 | 215766 |
11 | 854702 |
12 | 3396916 |
13 | 13530350 |
14 | 53971350 |
15 | 215492564 |
16 | 860941798 |
17 | 3441074654 |
18 | 13757249460 |
19 | 55010542910 |
20 | 219993856006 |
21 | 879848932052 |
22 | 3519064567926 |
23 | 14075391282830 |
24 | 56299295324980 |
25 | 225191238869774 |