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A161022
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Collatz (or 3x+1) trajectory starting at 10087.
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6
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10087, 30262, 15131, 45394, 22697, 68092, 34046, 17023, 51070, 25535, 76606, 38303, 114910, 57455, 172366, 86183, 258550, 129275, 387826, 193913, 581740, 290870, 145435, 436306, 218153, 654460, 327230, 163615, 490846, 245423, 736270
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refs;
listen;
history;
text;
internal format)
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OFFSET
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0,1
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COMMENTS
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At step 221 becomes periodic: 4 2 1 4 2 1 4 2 1 ... - N. J. A. Sloane, Jul 27 2019
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LINKS
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MATHEMATICA
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NestList[If[EvenQ[#], #/2, 3#+1]&, 10087, 30] (* Harvey P. Dale, Jul 25 2023 *)
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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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EXTENSIONS
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STATUS
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approved
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