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) |
---|---|
1 | 2 |
2 | 6 |
3 | 24 |
4 | 104 |
5 | 442 |
6 | 1870 |
7 | 7920 |
8 | 33552 |
9 | 142130 |
10 | 602070 |
11 | 2550408 |
12 | 10803704 |
13 | 45765226 |
14 | 193864606 |
15 | 821223648 |
16 | 3478759200 |
17 | 14736260450 |
18 | 62423800998 |
19 | 264431464440 |
20 | 1120149658760 |
21 | 4745030099482 |
22 | 20100270056686 |
23 | 85146110326224 |
24 | 360684711361584 |
25 | 1527884955772562 |