A070524 Value of n-th cyclotomic polynomial at phi(n).

0, 2, 7, 5, 341, 3, 55987, 257, 46873, 205, 11111111111, 241, 9726655034461, 39991, 14709241, 16777217, 19676527011956855057, 46441, 41660902667961039785743, 16519105, 8177824843189, 9090909091, 357686347714896679177439424707

Offset

1,2

Links

Table of n, a(n) for n=1..23.

Example

n=6: the 6th cyclotomic polynomial is 1 - x + xx, phi(6)=2, C(6, phi(6)) = C(6,2) = 1 - 2 + 4 = 3 = a(6).

Mathematica

Table[Cyclotomic[w, EulerPhi[w]], {w, 1, 25}]

Crossrefs

Cf. A070518-A070523.

Sequence in context: A335594 A051757 A193746 * A259830 A259235 A264692

Adjacent sequences: A070521 A070522 A070523 * A070525 A070526 A070527

Keyword

easy,nonn

Author

Labos Elemer, May 02 2002

Status

approved