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 | 2 |
1 | 3 |
2 | 20 |
3 | 210 |
4 | 2772 |
5 | 42042 |
6 | 700128 |
7 | 12471030 |
8 | 233716340 |
9 | 4557468630 |
10 | 91752013080 |
11 | 1896208270320 |
12 | 40055997189600 |
13 | 862021408906800 |
14 | 18849534808095360 |
15 | 417929529573239310 |
16 | 9379553386892837940 |
17 | 212776905535994934750 |
18 | 4873239487455972633000 |
19 | 112571832160232967822300 |