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Search: id:A064807
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| A064807 |
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Numbers which are divisible by their digital root (A010888). |
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+0
1
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| 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 18, 19, 20, 21, 24, 27, 28, 30, 36, 37, 38, 39, 40, 42, 45, 46, 48, 50, 54, 55, 56, 57, 60, 63, 64, 66, 70, 72, 73, 74, 75, 76, 78, 80, 81, 82, 84, 90, 91, 92, 93, 95, 96, 99, 100, 102, 108, 109, 110, 111, 112, 114, 117, 118, 120, 126, 127
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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All numbers m * 9, m > 0, belong to a.
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LINKS
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Harry J. Smith, Table of n, a(n) for n=1,...,1000
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EXAMPLE
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48: 4 + 8 = 12 -> 1 + 2 = 3. 48 = 3 * 16 therefore 48 = a(28).
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PROGRAM
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(PARI) { n=0; for (m=1, 10^9, d=(m - 1)%9 + 1; if (m%d == 0, write("b064807.txt", n++, " ", m); if (n==1000, return)) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Sep 26 2009]
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CROSSREFS
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A010888.
Sequence in context: A005711 A059765 A143289 this_sequence A007603 A005349 A085135
Adjacent sequences: A064804 A064805 A064806 this_sequence A064808 A064809 A064810
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KEYWORD
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nonn
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AUTHOR
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Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 21 2001
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EXTENSIONS
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OFFSET changed from 0,2 to 1,2 and EXAMPLE changed to 48 = a(28) by Harry J. Smith (hjsmithh(AT)sbcglobal.net), Sep 26 2009
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