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A178931
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This sequence S is generated by the following rules: 2 is in S, and if n is in S, then floor[(3n-1)/2] and 3n are in S.
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6
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2, 6, 8, 11, 16, 18, 23, 24, 26, 33, 34, 35, 38, 48, 49, 50, 52, 54, 56, 69, 71, 72, 73, 74, 77, 78, 80, 83, 99, 102, 103, 105, 106, 107, 109, 110, 114, 115, 116, 119, 124, 144, 147, 148, 150, 152, 154, 156, 157, 158, 160, 162, 163, 164, 168, 170, 172, 173, 178, 185
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OFFSET
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1,1
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COMMENTS
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This sequence results from flattening and sorting the tree at A183212. Complement of A183213, obtained from the tree at A183211.
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LINKS
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FORMULA
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(See the Mathematica code.)
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MATHEMATICA
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nn=200; t={2}; t0=t; While[t=Select[Union[t, Floor[(3*t-1)/2], 3*t], #<=nn &]; t0 != t, t0=t]; t
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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