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A048982
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Number of numbers which have a "prime-rich" reduced residue system (RRS) and binary order n.
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0
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0, 0, 0, 1, 3, 8, 15, 22, 32, 50, 85, 80, 98, 84, 59, 37, 10, 2, 0, 0, 0
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OFFSET
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0,5
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COMMENTS
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It is remarkable that in exponentially increasing ranges these occurrences increase to n=13 and after decline to zero. So A048868 is believed to be finite.
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LINKS
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Table of n, a(n) for n=0..20.
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EXAMPLE
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In binary order (A029837) zone of 7 i.e. in [ 63,127) 22 numbers which belong to A048868 can be found: 66,68,70,72,74,76,78,80,84,88, 90,96,98,100,102,104,108,110,112,114,120 and 126. The largest term is 90090. The largest 4 are divided by 2310, the largest 28 by 210 and the largest 103 by 30.
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CROSSREFS
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Cf. A048862-A048869, A002110, A029837, A048597.
Sequence in context: A060320 A162372 A101711 * A064356 A157606 A191414
Adjacent sequences: A048979 A048980 A048981 * A048983 A048984 A048985
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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)
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STATUS
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approved
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