A020504 Cyclotomic polynomials at x=-5.

-5, -6, -4, 21, 26, 521, 31, 13021, 626, 15501, 781, 8138021, 601, 203450521, 19531, 464881, 390626, 127156575521, 15751, 3178914388021, 375601, 290639881, 12207031, 1986821492513021, 390001, 95336923825001

Offset: 0

Author

Simon Plouffe

Keywords

• sign

Links

• Paolo Xausa, Table of n, a(n) for n = 0..1000
• Index entries for cyclotomic polynomials, values at X

Programs

Maple

with(numtheory,cyclotomic); f := n->subs(x=-5,cyclotomic(n,x)); seq(f(i),i=0..64);

Mathematica

Join[{-5}, Cyclotomic[Range[50], -5]] (* Paolo Xausa, Feb 26 2024 *)