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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
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
KEYWORD
nonn
AUTHOR
David W. Wilson, Feb 10 2003
STATUS
approved

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Last modified May 18 23:43 EDT 2024. Contains 372666 sequences. (Running on oeis4.)