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Search: id:A130429
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| A130429 |
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List of all numbers n such that n is equal to the number of 7's in the decimal digits of all numbers <= n. |
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10
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| 0, 9465000000, 9471736170, 9500000000, 9757536170, 9965000000, 9971736170, 10000000000, 19465000000, 19471736170, 19500000000, 19757536170, 19965000000, 19971736170, 20000000000, 29465000000, 29471736170
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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A finite sequence with 49 terms.
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LINKS
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Graeme McRae (g_m(AT)mcraefamily.com), May 26 2007, Table of n, a(n) for n = 1..49
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EXAMPLE
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a(5)=9757536170 because the number of 7's in the decimal digits of the numbers from 0 to 9757536170 is 9757536170, and this is the 5th such number.
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CROSSREFS
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Cf. A014778 for proof these sequences are finite; Also A101639, A101640, A101641, A130427, A130428, A130430, A130431; Cf. A130432 for the number of numbers in these sequences.
Sequence in context: A140501 A134448 A048053 this_sequence A130430 A130428 A022251
Adjacent sequences: A130426 A130427 A130428 this_sequence A130430 A130431 A130432
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KEYWORD
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base,fini,nonn
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AUTHOR
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Graeme McRae (g_m(AT)mcraefamily.com), May 26 2007
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