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A103755
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Number of contiguous digits i in the counting numbers, for i=1.
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0
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1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1
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OFFSET
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1,3
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COMMENTS
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Write the natural numbers as an infinite sequence of digits, starting at the left; and count the digits of each group of "1"'s you encounter (the smallest "groups" have one "1").
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LINKS
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EXAMPLE
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a(1)=1: the first "1" of the counting numbers, isolated.
a(2)=1: the second "1", first digit of number 10, isolated.
a(3)=3 two "1"'s of 11 and one "1" of 12 = three "1"'s, the next group of "1"'s.
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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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