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Search: id:A107924
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| A107924 |
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Even numbers n such that n^2 is an arithmetic number. |
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+0
2
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| 296, 536, 632, 872, 1208, 1304, 1544, 2072, 2216, 2648, 2984, 3584, 3656, 3752, 3848, 3896, 3904, 3992, 4328, 4424, 4568, 4904, 5624, 5672, 5912, 6008, 6104, 6584, 6968, 7016, 7256, 7352, 7928, 8216, 8264, 8456, 8696, 8896, 8936, 9032, 9128, 9176, 9368
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Odd numbers with this property are much more numerous, cf. A107925, A003601 (arithmetic number).
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MATHEMATICA
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Select[Range[2, 10000, 2], Mod[DivisorSigma[1, #^2], DivisorSigma[0, #^2]]==0&]
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CROSSREFS
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Cf. A003601, A107925.
Sequence in context: A131274 A074868 A003780 this_sequence A134260 A053394 A037043
Adjacent sequences: A107921 A107922 A107923 this_sequence A107925 A107926 A107927
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KEYWORD
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easy,nonn
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AUTHOR
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Zak Seidov (zakseidov(AT)yahoo.com), Jun 10 2005
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