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 | 150 |
2 | -5400 |
3 | 625200 |
4 | -86672550 |
5 | 13570016400 |
6 | -2289741037200 |
7 | 406440122001600 |
8 | -74830416797043000 |
9 | 14162747887897808550 |
10 | -2738995393669565720400 |
11 | 538973037306449327998800 |
12 | -107578899914865970323788400 |
13 | 21729813219122500082762389200 |