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 A174865 Odd abundant numbers whose abundance is even. 2
 945, 1575, 2205, 2835, 3465, 4095, 4725, 5355, 5775, 5985, 6435, 6615, 6825, 7245, 7425, 7875, 8085, 8415, 8505, 8925, 9135, 9555, 9765, 10395, 11655, 12285, 12705, 12915, 13545, 14175, 14805, 15015, 15435, 16065, 16695, 17325, 17955, 18585 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS This is a subsequence of the odd abundant numbers, A005231. The first term in A005231 but not in this sequence is 11025. LINKS Amiram Eldar, Table of n, a(n) for n = 1..10000 (terms 1..1989 from T. D. Noe) MATHEMATICA goodQ[n_] := Module[{ds=DivisorSigma[1, n]}, ds>2n && EvenQ[ds]]; Select[Range[1, 1000000, 2], goodQ] CROSSREFS Cf. A156942 (Odd abundant numbers whose abundance is odd). Cf. A005231, A033880. Sequence in context: A252192 A252185 A005231 * A174535 A243104 A006038 Adjacent sequences: A174862 A174863 A174864 * A174866 A174867 A174868 KEYWORD nonn AUTHOR T. D. Noe, Mar 31 2010 STATUS approved

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Last modified December 7 22:27 EST 2022. Contains 358671 sequences. (Running on oeis4.)