A020509 Cyclotomic polynomials at x=-10.

-10, -11, -9, 91, 101, 9091, 111, 909091, 10001, 999001, 11111, 9090909091, 9901, 909090909091, 1111111, 109889011, 100000001, 9090909090909091, 1001001, 909090909090909091, 99009901, 1098900989011, 11111111111

Offset: 0

Author

Simon Plouffe

Keywords

• sign

Links

• Paolo Xausa, Table of n, a(n) for n = 0..900
• Index entries for cyclotomic polynomials, values at X

Programs

Maple

with(numtheory,cyclotomic); f := n->subs(x=-10,cyclotomic(n,x)); seq(f(i),i=0..64);

Mathematica

Join[{-10}, Cyclotomic[Range[30], -10]] (* Paolo Xausa, Feb 26 2024 *)