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Search: id:A078558
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| 1, 2, 8, 48, 96, 1152, 9216, 1658880, 3317760, 92897280, 2786918400, 100329062400, 802632499200, 370816214630400, 741632429260800, 2966529717043200, 29665297170432000, 355983566045184000
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OFFSET
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1,2
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FORMULA
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a(n)=GCD[A000203[A002110(n)], A000005[A002110(n)]]= GCD[A005867(n), A054640(n)]
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EXAMPLE
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m=2,3,30,210 primorials are balanced numbers so theses GCD() equals phi(): a[m]=1,2,8,48 (see A005867).
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CROSSREFS
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Cf. A000203, A002110, A000005, A005867, A054640, A020492.
Sequence in context: A145846 A009566 A003275 this_sequence A003032 A058928 A004141
Adjacent sequences: A078555 A078556 A078557 this_sequence A078559 A078560 A078561
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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), Dec 06 2002
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