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Search: id:A097416
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| A097416 |
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Numbers n such that A076078(m)=n for some m, excluding powers of 2. |
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+0
3
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| 10, 44, 184, 218, 400, 752, 3040, 3392, 3748, 12224, 27904, 49024, 57856, 61064, 64594, 196352, 226304, 253808, 785920, 954368, 981520, 1822720, 3144704, 12580864, 14630912, 15499264, 15722528, 16450240, 16700300, 31522816, 50327552
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OFFSET
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1,1
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COMMENT
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A076078(n) equals the number of sets of distinct positive integers with a least common multiple of n.
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MATHEMATICA
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f[n_] := Block[{d = Divisors[n]}, Plus @@ (MoebiusMu[n/d](2^DivisorSigma[0, d] - 1))]; t = Union[ Table[ f[n], {n, 2^20}]]; Complement[ Take[t, 52], Table[2^i, {i, 0, 20}]]
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CROSSREFS
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Cf. A076078, A097215.
Sequence in context: A005720 A060326 A124852 this_sequence A076373 A097215 A126397
Adjacent sequences: A097413 A097414 A097415 this_sequence A097417 A097418 A097419
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KEYWORD
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nonn
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 17 2004
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