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Search: id:A006159
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| A006159 |
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a(n)=a(a(n-4))+a(n-a(n-4)).
(Formerly M0454)
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+0
1
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| 1, 1, 1, 1, 2, 3, 4, 5, 5, 5, 5, 6, 7, 7, 7, 8, 9, 9, 10, 11, 11, 12, 12, 12, 12, 13, 13, 14, 15, 16, 16, 16, 16, 17, 18, 19, 19, 20, 20, 21, 22, 23, 23, 23, 24, 24, 24, 24, 24, 25, 25, 26, 27, 27, 28, 29
(list; graph; listen)
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OFFSET
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1,5
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REFERENCES
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J. Arkin, D. C. Arney, L. S. Dewald and W. E. Ebel, Jr., Families of recursive sequences, J. Rec. Math., 22 (No. 22, 1990), 85-94.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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CROSSREFS
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Sequence in context: A087829 A078474 A087177 this_sequence A081610 A063273 A007599
Adjacent sequences: A006156 A006157 A006158 this_sequence A006160 A006161 A006162
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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