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3, 4, 5, 7, 13, 17, 19, 21, 23, 25, 28, 29, 31, 33, 34, 37, 41, 43, 45, 46, 49, 53, 55, 61, 65, 67, 71, 73, 77, 79, 81, 82, 85, 89, 91, 95, 97, 101, 103, 105, 106, 109, 113, 115, 117, 118, 119, 121, 125, 127, 129, 133, 137, 139, 141, 142, 145, 149, 151, 153
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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COMMENTS
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These are the numbers 2x + 1 and 3x + 1 as x ranges through the numbers in A077477.
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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)/3, (# - 1)/2}],
IntegerQ]]] &]], {150}]; a; (* A077477 *)
Complement[Range[Last[a]], a]; (* A325422 *)
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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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