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 | 0 |
2 | 1 |
3 | 4 |
4 | 18 |
5 | 89 |
6 | 523 |
7 | 3598 |
8 | 28341 |
9 | 251531 |
10 | 2483877 |
11 | 27012163 |
12 | 320769440 |
13 | 4129906548 |
14 | 57302453360 |
15 | 852373993744 |
16 | 13531437150692 |
17 | 228343001917931 |
18 | 4081631159283027 |
19 | 77040788131467135 |
20 | 1531185664112909314 |