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Search: id:A004446
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| 5, 4, 7, 6, 1, 0, 3, 2, 13, 12, 15, 14, 9, 8, 11, 10, 21, 20, 23, 22, 17, 16, 19, 18, 29, 28, 31, 30, 25, 24, 27, 26, 37, 36, 39, 38, 33, 32, 35, 34, 45, 44, 47, 46, 41, 40, 43, 42, 53, 52, 55, 54, 49, 48, 51, 50, 61, 60
(list; graph; listen)
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OFFSET
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0,1
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REFERENCES
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E. R. Berlekamp, J. H. Conway and R. K. Guy, Winning Ways, Academic Press, NY, 2 vols., 1982, see p. 60.
J. H. Conway, On Numbers and Games. Academic Press, NY, 1976, pp. 51-53.
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LINKS
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Index entries for sequences related to Nim-sums
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FORMULA
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a(n) = n + (-1)^n + 4(-1)^[n/4] - Mitchell Harris, Jan 10 2005
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CROSSREFS
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Adjacent sequences: A004443 A004444 A004445 this_sequence A004447 A004448 A004449
Sequence in context: A019323 A020832 A021870 this_sequence A115409 A010775 A010485
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KEYWORD
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nonn
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AUTHOR
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njas
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