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A136447
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Numbers which are not pseudoperfect: Complement of A005835.
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4
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1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 19, 21, 22, 23, 25, 26, 27, 29, 31, 32, 33, 34, 35, 37, 38, 39, 41, 43, 44, 45, 46, 47, 49, 50, 51, 52, 53, 55, 57, 58, 59, 61, 62, 63, 64, 65, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 79, 81, 82, 83, 85, 86, 87, 89, 91, 92, 93, 94, 95
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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COMMENTS
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Contains the weird numbers 70, 836, ... (A006037), so is different from the set A005100 of deficient numbers.
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LINKS
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MATHEMATICA
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ppQ[n_] := AnyTrue[Subsets[Divisors[n] // Most], Total[#] == n&];
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PROG
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(Haskell)
a136447 n = a136447_list !! (n-1)
a136447_list = filter ((== 0) . a210455) [1..]
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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