A080255 Antisquares: of the form a*p^k where p is prime, k is odd and a is nonsquare modulo p.

6, 10, 15, 21, 22, 24, 26, 33, 35, 38, 40, 42, 51, 54, 57, 58, 60, 65, 66, 69, 70, 74, 77, 78, 84, 85, 86, 87, 88, 90, 91, 93, 96, 102, 104, 105, 106, 110, 114, 115, 118, 119, 122, 123, 129, 132, 133, 134, 135, 140, 141, 143, 150, 152, 159, 160, 161, 165, 166, 168, 170

Offset

1,1

Links

Table of n, a(n) for n=1..61.

Eric Weisstein's World of Mathematics, Antisquare Number.

Example

135 = 5*3^3 is antisquare.

Crossrefs

Sequence in context: A315266 A315267 A157937 * A337185 A324972 A315268

Adjacent sequences: A080252 A080253 A080254 * A080256 A080257 A080258

Keyword

nonn

Author

David W. Wilson, Feb 10 2003

Status

approved