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A086578
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a(n) = k where R(k+7)=7.
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8
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0, 63, 693, 6993, 69993, 699993, 6999993, 69999993, 699999993, 6999999993, 69999999993, 699999999993, 6999999999993, 69999999999993, 699999999999993, 6999999999999993, 69999999999999993, 699999999999999993
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| a(n) = 7*9*A002275(n) = 7*A002283(n) R(a(n))=A086575(n) One of family of sequences of form a(n)=k, where R(k+m)=m, m=1 to 9; m=1: A002283, m=2: A086573, m=3: A086574, m=4: A086575, m=5: A086576, m=6: A086577, m=7: A086578, m=8: A086579, m=9: A086580.
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FORMULA
| a(n) = 7*(10^n-1)
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CROSSREFS
| Sequence in context: A152731 A090028 A152725 * A198399 A115152 A069091
Adjacent sequences: A086575 A086576 A086577 * A086579 A086580 A086581
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KEYWORD
| nonn
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AUTHOR
| Ray Chandler (rayjchandler(AT)sbcglobal.net), Jul 22 2003
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