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 | 4 |
3 | -1 |
4 | 46 |
5 | 149 |
6 | 1351 |
7 | 8441 |
8 | 63499 |
9 | 462752 |
10 | 3514807 |
11 | 26923478 |
12 | 209566927 |
13 | 1647633779 |
14 | 13079663527 |
15 | 104649229988 |
16 | 843120766711 |
17 | 6833665175513 |
18 | 55683581174641 |
19 | 455878084448132 |
20 | 3748025535972448 |
21 | 30931714278955736 |
22 | 256150668109462507 |