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Search: id:A067561
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| A067561 |
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Radii n of circles with integer radius that can approximately be squared integrally: the Floor or Ceiling of Pi*n^2 is an integer square. |
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+0
1
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| 1, 22, 167, 334, 4821, 328663, 657326, 18796631, 37593262, 56389893, 75186524
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Ceiling[Pi*22^2] = 39^2, so 22 is a term of the sequence.
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MATHEMATICA
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Do[m = Pi*i^2; r = IntegerQ[Sqrt[Floor[m]]]; s = IntegerQ[Sqrt[Ceiling[m]]]; If[r || s, Print[i]], {i, 1, 10^6}]
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CROSSREFS
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Sequence in context: A041934 A027943 A141306 this_sequence A086604 A041932 A125359
Adjacent sequences: A067558 A067559 A067560 this_sequence A067562 A067563 A067564
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KEYWORD
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nonn
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AUTHOR
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Joseph L. Pe (joseph_l_pe(AT)hotmail.com), Jan 29 2002
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EXTENSIONS
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More terms from Jason Earls (zevi_35711(AT)yahoo.com), May 19 2002
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