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Search: id:A083248
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| 36, 40, 42, 48, 50, 54, 56, 60, 66, 70, 72, 78, 80, 84, 88, 90, 96, 98, 100, 102, 104, 105, 108, 110, 112, 114, 120, 126, 130, 132, 136, 138, 140, 144, 150, 152, 154, 156, 160, 162, 168, 170, 174, 176, 180, 182, 184, 186, 190, 192, 196, 198, 200, 204, 208, 210
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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n=100: d[n]=9,phi[n]=40,unrelateds[n]=100-9-40+1=52 so
52>40>9 holds; primes are not here since A045763[p]=0<A000005[p]=2.
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MATHEMATICA
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Do[r=EulerPhi[n]; d=DivisorSigma[0, n]; u=n-r-d+1; If[Greater[u, r]&&Greater[r, d], Print[n, {d, r, u}]], {n, 1, 1000}]
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CROSSREFS
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Cf. A000005, A000010, A045763, A073757, A083243-A083247, A020488.
Sequence in context: A098079 A031317 A129288 this_sequence A077090 A067672 A060292
Adjacent sequences: A083245 A083246 A083247 this_sequence A083249 A083250 A083251
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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), May 07 2003
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