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Search: id:A155870
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| A155870 |
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a(1)=1, if a(n-1) has m digits, a(n) has m mod 9 number of "m mod 9" followed by "m mod 9" zeros if a(n) is not equal to some a(x), x<n; otherwise a(n)=prescribed a(n) + n; |
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+0
1
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| 1, 10, 2200, 44440000, 8888888800000000, 77777770000000, 5555500000, 18, 2209, 44440010, 8888888800000011, 77777770000012, 5555500013, 24, 2215, 44440016, 8888888800000017, 77777770000018, 5555500019, 30
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Prescribed a(n) is defined as, "if a(n-1) has m digits, a(n) has m mod 9 number of "m mod 9" followed by "m mod 9" zeros"
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EXAMPLE
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a(3)=2200, number with 4 digits, thus a(4)=44440000. Similarly, a(8) was prescribed to be 10. But, since prescribed a(8)=a(2); a(8)=prescribed a(8)+8=18
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CROSSREFS
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Sequence in context: A024138 A004821 A114776 this_sequence A167775 A047945 A132675
Adjacent sequences: A155867 A155868 A155869 this_sequence A155871 A155872 A155873
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KEYWORD
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nonn
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AUTHOR
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Avik Roy (avik_3.1416(AT)yahoo.co.in), Jan 29 2009
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