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 | -3 |
2 | 9 |
3 | -18 |
4 | -57 |
5 | 942 |
6 | -4299 |
7 | -33078 |
8 | 786267 |
9 | -4357818 |
10 | -84919647 |
11 | 2153185746 |
12 | -9754462833 |
13 | -539983739298 |
14 | 13389257569005 |
15 | -13826647549926 |
16 | -6661768436593725 |
17 | 153336015047780790 |
18 | 938088731006163417 |
19 | -139051687661849130654 |
20 | 2787586449012275332023 |