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Search: id:A097255
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| A097255 |
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Numbers whose set of base 9 digits is {0,8}. |
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+0
2
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| 0, 8, 72, 80, 648, 656, 720, 728, 5832, 5840, 5904, 5912, 6480, 6488, 6552, 6560, 52488, 52496, 52560, 52568, 53136, 53144, 53208, 53216, 58320, 58328, 58392, 58400, 58968, 58976, 59040, 59048, 472392, 472400, 472464, 472472, 473040
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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n such that there exists a permutation p_1, ..., p_n of 1, ..., n such that i + p_i is a power of 9 for every i.
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FORMULA
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a(n) = 8*A033046(n).
a(2n) = 9*a(n), a(2n+1) = a(2n)+8.
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CROSSREFS
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Cf. A001196, A005823, A097251-A097262.
Sequence in context: A094911 A004165 A032554 this_sequence A115693 A112403 A043932
Adjacent sequences: A097252 A097253 A097254 this_sequence A097256 A097257 A097258
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KEYWORD
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nonn,base
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AUTHOR
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Ray Chandler (rayjchandler(AT)sbcglobal.net), Aug 3 2004
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