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A175909
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Decimal representation of the binary number formed by the concatenation of digits which are the same in both the left and right binary concatenations of the integers 1 to n.
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0
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1, 1, 7, 46, 29, 219, 495, 1502, 368357, 27603, 120539, 1797358, 462906349, 32361431, 33008607, 12857291758, 5972138981, 750631865, 99509722923, 13841055262, 31762354574285, 1019248986603, 8645573738319287
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,3
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LINKS
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MATHEMATICA
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Module[{l, r, d}, l = {}; r = {}; Table[d = IntegerDigits[x, 2]; l = Flatten[{l, d}]; r = Flatten[{d, r}]; FromDigits[ Pick[l, EvenQ[l + r]], 2], {x, 1, DESIRED_NUMBER_OF_TERMS}]]
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CROSSREFS
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KEYWORD
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base,easy,nonn
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AUTHOR
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STATUS
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approved
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