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A073790
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Numbers in base -9.
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9
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0, 1, 2, 3, 4, 5, 6, 7, 8, 180, 181, 182, 183, 184, 185, 186, 187, 188, 170, 171, 172, 173, 174, 175, 176, 177, 178, 160, 161, 162, 163, 164, 165, 166, 167, 168, 150, 151, 152, 153, 154, 155, 156, 157, 158, 140, 141, 142, 143, 144, 145, 146, 147, 148, 130, 131
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,3
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REFERENCES
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D. E. Knuth, The Art of Computer Programming. Addison-Wesley, Reading, MA, 1969, Vol. 2, p. 189.
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LINKS
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Table of n, a(n) for n=0..55.
Eric Weisstein's World of Mathematics, Negabinary
Prepared and presented by Matthew Szudzik of Wolfram Research, A Mathematica programming contest
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MATHEMATICA
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ToNegaBases[i_Integer, b_Integer] := FromDigits@ Rest@ Reverse@ Mod[ NestWhileList[(# - Mod[ #, b])/-b &, i, # != 0 &], b]; Table[ ToNegaBases[n, 9], {n, 0, 60}]
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CROSSREFS
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Cf. A007095, A039724, A073785, A007608, A073786, A073787, A073788, A073789 & A039723.
Sequence in context: A004870 A037336 A037443 * A029965 A004881 A004892
Adjacent sequences: A073787 A073788 A073789 * A073791 A073792 A073793
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KEYWORD
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base,easy,nonn
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AUTHOR
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Robert G. Wilson v, Aug 11 2002
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STATUS
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approved
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