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 | 0 |
1 | -1 |
2 | 0 |
3 | -256 |
4 | 6305 |
5 | -384320 |
6 | 16392896 |
7 | -799337825 |
8 | 37023521536 |
9 | -1748770383360 |
10 | 81985167507265 |
11 | -3854603638194816 |
12 | 181029655256841600 |
13 | -8505521232849819841 |
14 | 399560845889490455040 |
15 | -18771170453838609544960 |
16 | 881839776158402870049761 |
17 | -41427800130507702988683200 |
18 | 1946222939243803281837279296 |
19 | -91431083130550578762727373345 |
20 | 4295314095871701743501398017280 |