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Search: id:A081695
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| A081695 |
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From P-positions in a certain game. |
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+0
2
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| 0, 1, 3, 7, 12, 13, 21, 30, 31, 42, 45, 60, 61, 78, 79, 98, 99
(list; graph; listen)
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OFFSET
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0,3
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LINKS
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A. S. Fraenkel, New games related to old and new sequences, INTEGERS, Electronic J. of Combinatorial Number Theory, Vol. 4, Paper G6, 2004.
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FORMULA
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Let a(n) = A081694(n) and let b(n) = n-th term of the current sequence. Then a(n) = mex{ a(i), b(i) : 0 <= i < n}; b(n) = a(n) + b(n-1) - (1+(-1)^b(n-1))*a(n-1)/2. Also, apart from initial zero, current sequence is complement of A081694.
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CROSSREFS
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Cf. A081694.
Sequence in context: A056772 A024614 A045134 this_sequence A142958 A062731 A083031
Adjacent sequences: A081692 A081693 A081694 this_sequence A081696 A081697 A081698
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KEYWORD
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nonn,more,easy
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Apr 02 2003
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