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Search: id:A055077
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| A055077 |
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Multiplicity of Max{GCD[d,n!/d]} when d runs over divisors of n! (this is always a power of 2). |
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| 1, 2, 4, 4, 8, 2, 4, 8, 8, 2, 4, 8, 16, 16, 16, 16, 32, 16, 32, 16, 64, 64, 128, 32, 32, 32, 64, 32, 64, 32, 64, 128, 512, 128, 128, 128, 256, 256, 256, 256, 512, 1024, 2048, 1024, 512, 128, 256, 128, 128, 256, 1024, 512, 1024, 256, 1024, 4096, 16384, 4096, 8192
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OFFSET
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1,2
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EXAMPLE
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n=5, 5!=120, the set of GCD[d,120/d] values for the 16 divisors of 120 is:{1,2,1,2,1,2,1,2,2,1,2,1,2,1,2,1}. Tha max is 2 and it occurs 8 times, so a(5)=8.
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CROSSREFS
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Cf. A000188.
Sequence in context: A164721 A070072 A095061 this_sequence A117215 A011173 A162943
Adjacent sequences: A055074 A055075 A055076 this_sequence A055078 A055079 A055080
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KEYWORD
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nonn
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu), Jun 13 2000
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