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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.

A340181 a(n) = Product_{1<=j,k,m<=n} (4*sin(j*Pi/(2*n+1))^2 + 4*sin(k*Pi/(2*n+1))^2 + 4*sin(m*Pi/(2*n+1))^2).

Table of values

n a(n)
0 1
1 9
2 7486875
3 14334918272193811385583
4 1483160703050490588200236172057973908184332257091136

List of values

[1, 9, 7486875, 14334918272193811385583, 1483160703050490588200236172057973908184332257091136]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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