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A210025
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a(0)=1. Let S = string of digits of a(0),a(1),a(2),... To get a(n+1) (n>=0), subtract next element of S from a(n) if that would give a positive number, otherwise add it to a(n).
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5
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1, 2, 4, 8, 16, 15, 9, 8, 3, 12, 4, 1, 2, 4, 8, 7, 5, 1, 9, 2, 7, 6, 15, 13, 6, 12, 11, 6, 5, 2, 8, 7, 5, 4, 3, 9, 4, 2, 10, 3, 8, 4, 1, 10, 6, 4, 3, 3, 6, 14, 10, 9, 8, 8, 2, 6, 3, 6, 12, 11, 7, 6, 6, 15, 7, 15, 13, 7, 4, 10, 9, 7, 6, 5, 12, 6, 12, 11, 6, 13
(list;
graph;
refs;
listen;
history;
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internal format)
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OFFSET
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0,2
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REFERENCES
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Eric Angelini, Posting to Sequence Fans Mailing List, Mar 06 2012
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LINKS
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EXAMPLE
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1.2.4.8.16.15.9.8.3.12.4.1.2.4.8.7.5.1.9.2.7.6.15.13.6.12.11.6.5.2.8.7.5.... <- a(0), a(1), ...
.1.2.4.8..1..6.1.5.9..8.3.1.2.4.1.2.4.8.7.5.1.9..2..7.6..1..5.1.3.6.1.2.... <- S
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CROSSREFS
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KEYWORD
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nonn,base,easy
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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