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Search: id:A103449
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| A103449 |
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Values of n such that sum(mobius(binom(n,k),k=0..n))=0. |
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+0
3
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| 3, 12, 24, 29, 34, 40, 54, 60, 67, 68, 75, 86, 93, 97, 102, 119, 125, 131, 133, 142, 152, 157, 160, 163, 164, 168, 170, 172, 189, 193, 197, 208, 210, 220, 221, 228, 229, 246, 251, 255, 257, 261, 270, 275, 280, 293, 296, 307, 308, 313, 315, 332, 337, 338, 340
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OFFSET
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1,1
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COMMENT
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Values of n such that A103448(n)=0.
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EXAMPLE
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12 belongs to the sequence because the only square-free values of binom(12,k) are 1,2*3*11,2*3*11,1, on which the Mobius function takes the values 1,-1,-1,1, respectively.
8 does not belong to the sequence because the only square-free value of binom(8,k) are 1,2*5*7,1, on which the Mobius function takes the values 1,-1,1, respectively.
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CROSSREFS
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Cf. A103447, A103448.
Adjacent sequences: A103446 A103447 A103448 this_sequence A103450 A103451 A103452
Sequence in context: A063107 A015629 A012469 this_sequence A030571 A112236 A050180
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KEYWORD
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nonn
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AUTHOR
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Emeric Deutsch (deutsch(AT)duke.poly.edu), Feb 07 2005
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