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 A044066 Numbers n such that string 1,1 occurs in the base 4 representation of n but not of n-1. 0
 5, 20, 37, 53, 69, 80, 101, 117, 133, 148, 165, 181, 197, 212, 229, 245, 261, 276, 293, 309, 320, 389, 404, 421, 437, 453, 468, 485, 501, 517, 532, 549, 565, 581, 592, 613, 629, 645, 660, 677, 693, 709, 724, 741, 757, 773, 788 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS MATHEMATICA Transpose[SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 4], {1, 1}]>0, 1, 0], {n, 800}], {0, 1}]][[2]] (* The program uses the SequencePosition and SequenceCount functions from Mathematica version 10 *) (* Harvey P. Dale, Nov 28 2015 *) CROSSREFS Sequence in context: A003339 A047716 A063110 * A013337 A031082 A161445 Adjacent sequences:  A044063 A044064 A044065 * A044067 A044068 A044069 KEYWORD nonn,base AUTHOR STATUS approved

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