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 | 1 |
2 | 1 |
3 | 7 |
4 | 25 |
5 | 241 |
6 | 1561 |
7 | 19951 |
8 | 188497 |
9 | 3032065 |
10 | 37720081 |
11 | 734331511 |
12 | 11341504681 |
13 | 259658249137 |
14 | 4792613587945 |
15 | 126280535523871 |
16 | 2712093428032801 |
17 | 80881163134899841 |
18 | 1981706113050012577 |
19 | 66009436508505875815 |
20 | 1817280748378601067961 |
21 | 66887742743997848317681 |