cp's OEIS Frontend

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.

A271385 a(n) = Product_{k=0..floor((n - 1)/2)} (n - 2*k)^(n - 2*k).

Table of values

n a(n)
0 1
1 1
2 4
3 27
4 1024
5 84375
6 47775744
7 69486440625
8 801543976648704
9 26920470805806965625
10 8015439766487040000000000
11 7680724499239438722449399746875
12 71466466094944065310414602240000000000
13 2326300251412874049290421829657963142035959375

List of values

[1, 1, 4, 27, 1024, 84375, 47775744, 69486440625, 801543976648704, 26920470805806965625, 8015439766487040000000000, 7680724499239438722449399746875, 71466466094944065310414602240000000000, 2326300251412874049290421829657963142035959375]