A192452 Numbers n such that -1 is not a 4th power mod n.

3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 35, 36, 37, 38, 39, 40, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71

Offset

1,1

Comments

Complement of A192453.

Links

Table of n, a(n) for n=1..66.

Mathematica

Table[If[Reduce[x^4==-1, Modulus->n]===False, n], {n, 2, 300}]//Union

Crossrefs

Sequence in context: A179005 A026505 A029674 * A132147 A118955 A191838

Adjacent sequences: A192449 A192450 A192451 * A192453 A192454 A192455

Keyword

nonn

Author

José María Grau Ribas, Jul 01 2011

Status

approved