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.

A340165 a(n) = 4^((n-2)*(n-1)) * Product_{1<=i sin(i*Pi/(2*n))^2 * sin(j*Pi/(2*n))^2).

Table of values

n a(n)
1 1
2 1
3 19
4 7056
5 51251277
6 7280323311888
7 20225477546584790663
8 1098876823994281426921193472
9 1167619533875635661974056722756222809
10 24263631353490502503207804571072304043237024000

List of values

[1, 1, 19, 7056, 51251277, 7280323311888, 20225477546584790663, 1098876823994281426921193472, 1167619533875635661974056722756222809, 24263631353490502503207804571072304043237024000]