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) |
---|---|
1 | 1 |
2 | 2 |
3 | 2 |
4 | -4 |
5 | 0 |
6 | 68 |
7 | -588 |
8 | 2728 |
9 | 17688 |
10 | -766960 |
11 | 14239512 |
12 | -164672640 |
13 | -494840680 |
14 | 109461302008 |
15 | -4446935274696 |
16 | 122761839873664 |
17 | -1889647100968176 |
18 | -50347073461051088 |
19 | 6582857386505201520 |
20 | -397095020380174033424 |
21 | 17279075935957171412288 |