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A325531
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Difference sequence of A325441.
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3
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3, 2, 1, 3, 6, 2, 4, 2, 1, 1, 2, 2, 4, 3, 1, 2, 2, 1, 3, 6, 2, 4, 3, 1, 2, 2, 4, 2, 6, 4, 6, 2, 4, 2, 1, 1, 2, 2, 4, 3, 1, 2, 2, 4, 2, 4, 2, 4, 3, 1, 2, 2, 4, 3, 1, 2, 2, 1, 1, 2, 4, 2, 2, 4, 2, 1, 1, 2, 2, 4, 3, 1, 2, 2, 4, 6, 2, 4, 3, 1, 2, 2, 4, 2, 4, 2
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OFFSET
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1,1
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COMMENTS
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See A325417 for a guide to related sequences. Conjecture: every term is in {1,2,3,4,6}; note that 5 is missing.
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LINKS
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MATHEMATICA
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a = {1}; Do[AppendTo[a, NestWhile[# + 1 &, Last[a] + 1, Apply[Or,
Map[MemberQ[a, #] &, Select[Flatten[{(#+1)/2, (#+1)/3}],
IntegerQ]]] &]], {20000}]; a; (* A315440 *)
c = Complement[Range[Last[a]], a] ; (* A325441 *)
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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