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A293795
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Numbers k such that (d(k), d(k+1)) = (1,1) in the base-2 digits d(i) of e.
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4
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5, 8, 9, 10, 11, 12, 28, 43, 44, 47, 60, 69, 70, 71, 72, 73, 76, 77, 86, 102, 103, 107, 108, 109, 115, 116, 117, 121, 122, 123, 128, 129, 132, 139, 140, 144, 145, 152, 159, 160, 161, 165, 166, 173, 179, 182, 192, 200, 201, 202, 211, 214, 234, 243, 247, 248
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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(d(i)) = (1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1,...) = A004593, in which (1,1) first occurs as (a(5),a(6)).
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MATHEMATICA
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z = 100; s = StringJoin[Map[ToString, First[RealDigits[N[E], 10000], 2]]]];
Take[Map[#[[1]]&, StringPosition[s, "00"]], z] (*A293792*)
Take[Map[#[[1]]&, StringPosition[s, "01"]], z] (*A293793*)
Take[Map[#[[1]]&, StringPosition[s, "10"]], z] (*A293794*)
Take[Map[#[[1]]&, StringPosition[s, "11"]], z] (*A293795*)
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CROSSREFS
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KEYWORD
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nonn,easy,base
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AUTHOR
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STATUS
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approved
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