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 | 0 |
1 | 1 |
2 | 15 |
3 | 115 |
4 | 675 |
5 | 3451 |
6 | 16275 |
7 | 72955 |
8 | 316275 |
9 | 1340251 |
10 | 5590035 |
11 | 23054395 |
12 | 94314675 |
13 | 383578651 |
14 | 1553331795 |
15 | 6270493435 |
16 | 25253701875 |
17 | 101530450651 |
18 | 407669649555 |
19 | 1635323974075 |
20 | 6555235693875 |
21 | 26262769508251 |
22 | 105176572911315 |
23 | 421082805640315 |
24 | 1685460823266675 |
25 | 6745232212623451 |