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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; refs; listen; history; internal format)
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OFFSET
| 0,1
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REFERENCES
| 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
| Index entries for sequences related to Nim-sums
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FORMULA
| a(n) = n + (-1)^n + 4(-1)^[n/4] - Mitchell Harris, Jan 10 2005
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CROSSREFS
| Sequence in context: A154776 A188932 A195428 * A115409 A010775 A010485
Adjacent sequences: A004443 A004444 A004445 * A004447 A004448 A004449
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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