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A280657
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Numbers beginning with their digital root in decimal representation.
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1
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 19, 20, 29, 30, 39, 40, 49, 50, 59, 60, 69, 70, 79, 80, 89, 90, 99, 100, 109, 118, 127, 136, 145, 154, 163, 172, 181, 190, 199, 200, 209, 218, 227, 236, 245, 254, 263, 272, 281, 290, 299, 300, 309, 318, 327, 336, 345, 354, 363, 372, 381, 390, 399, 400, 409, 418, 427, 436
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OFFSET
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1,3
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COMMENTS
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10% of the nonnegative integers are in the sequence, approximatively.
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LINKS
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EXAMPLE
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The digital root of 10 is 1 and "1" is the first digit of "10", so 10 is in the sequence.
The digital root of 11 is 2 and "2" is not the first digit of "11", so 11 is not in the sequence.
The digital root of 19 is 1 and "1" is the first digit of "19", so 19 is in the sequence.
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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