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A080255 Antisquares: of the form a*p^k where p is prime, k is odd and a is nonsquare modulo p. 1
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 (list; graph; refs; listen; history; text; internal format)
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 * A315268 A315269 A315270

Adjacent sequences:  A080252 A080253 A080254 * A080256 A080257 A080258

KEYWORD

nonn

AUTHOR

David W. Wilson, Feb 10 2003

STATUS

approved

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Last modified February 22 18:05 EST 2019. Contains 320400 sequences. (Running on oeis4.)