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 A112644 Odd and squarefree abundant numbers not divisible by 5. 2
 22309287, 28129101, 30069039, 34051017, 35888853, 36399363, 38057019, 39768729, 40681641, 41708667, 43444401, 45588543, 45894849, 48141093, 48555507, 50489439, 51294243, 51408357, 53804751, 54777723, 55186131, 56429373, 57228171, 58555497, 59168109 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Donovan Johnson, Table of n, a(n) for n = 1..1000 EXAMPLE 99906807 = 3*7*11*13*17*19*103. MATHEMATICA ta={{0}}; Do[g=n; s=DivisorSigma[1, n]-2*n; If[Greater[s, 0]&&Equal[Abs[MoebiusMu[n]], 1]&& !Equal[Mod[n, 2], 0]&&!Equal[Mod[n, 5], 0], Print[n, PrimeFactorList[n], s]; ta=Append[ta, n]], {n, 10000000, 100000000}]; {ta=Delete[ta, 1], g} CROSSREFS Cf. A087248, A046391, A112643, A112642, A112640. Cf. A005231, A047802. Sequence in context: A183799 A205096 A183969 * A179710 A069317 A022211 Adjacent sequences: A112641 A112642 A112643 * A112645 A112646 A112647 KEYWORD nonn AUTHOR Labos Elemer, Sep 20 2005 STATUS approved

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Last modified December 8 23:37 EST 2023. Contains 367681 sequences. (Running on oeis4.)