RosettaCodeData/Task/Hofstadter-Q-sequence/Mathematica/hofstadter-q-sequence-2.math
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2013-04-10 22:43:41 -07:00

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Hofstadter /@ Range[10]
{1,1,2,3,3,4,5,5,6,6}
Hofstadter[1000]
502
Count[Differences[Hofstadter /@ Range[100000]], _?Negative]
49798