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Search: id:A081644
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| A081644 |
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Integers congruent to 0, 1, 4, 9 or 16 (mod 25) which are not squares. |
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+0
2
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| 26, 29, 34, 41, 50, 51, 54, 59, 66, 75, 76, 79, 84, 91, 101, 104, 109, 116, 125, 126, 129, 134, 141, 150, 151, 154, 159, 166, 175, 176, 179, 184, 191, 200, 201, 204, 209, 216, 226, 229, 234, 241, 250, 251, 254, 259, 266, 275, 276, 279, 284, 291, 300, 301, 304
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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Mark A. Herkommer, Number Theory, A Programmer's Guide, McGraw-Hill, New York, 1999, page 315.
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MATHEMATICA
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Select[ Range[308], (Mod[ #, 25] == 0 || Mod[ #, 25] == 1 || Mod[ #, 25] == 4 || Mod[ #, 25] == 9 || Mod[ #, 25] == 16) && !IntegerQ[ Sqrt[ # ]] & ]
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CROSSREFS
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Sequence in context: A042401 A042402 A056081 this_sequence A055109 A106552 A106550
Adjacent sequences: A081641 A081642 A081643 this_sequence A081645 A081646 A081647
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KEYWORD
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easy,nonn
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com), Mar 26 2003
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