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A138393
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Numbers of form 8k+1 which are not squares.
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1
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17, 33, 41, 57, 65, 73, 89, 97, 105, 113, 129, 137, 145, 153, 161, 177, 185, 193, 201, 209, 217, 233, 241, 249, 257, 265, 273, 281, 297, 305, 313, 321, 329, 337, 345, 353, 369, 377, 385, 393, 401, 409, 417, 425, 433, 449, 457, 465, 473, 481, 489, 497, 505
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refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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a = {}; Do[If[Sqrt[8k + 1] == Floor[Sqrt[8k + 1]], [null], AppendTo[a, 8k + 1]], {k, 0, 100}]; a
Select[8*Range[80]+1, !IntegerQ[Sqrt[#]]&] (* Harvey P. Dale, May 03 2018 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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