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Search: id:A001960
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| A001960 |
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Wythoff game.
(Formerly M1735 N0687)
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+0
2
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| 2, 7, 11, 15, 20, 24, 28, 32, 37, 41, 45, 50, 54, 58, 63, 67, 71, 76, 80, 84, 88, 93, 97, 101, 106, 110, 114, 119, 123, 127, 131, 136, 140, 144, 149, 153, 157, 162, 166, 170, 174, 179, 183, 187
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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Complement of A001957. [From Omar E. Pol (info(AT)polprimos.com), Jan 06 2009]
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REFERENCES
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I. G. Connell, A generalization of Wythoff's game, Canad. Math. Bull., 2 (1959), 181-190.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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FORMULA
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a(n+1) = Sum[i=0..n, Sum[j=0..n, C(n-i, j)*C(n-j, i) ]].
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CROSSREFS
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Cf. A001957. [From Omar E. Pol (info(AT)polprimos.com), Jan 06 2009]
Sequence in context: A040128 A140548 A018308 this_sequence A140491 A122823 A063289
Adjacent sequences: A001957 A001958 A001959 this_sequence A001961 A001962 A001963
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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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