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Search: id:A131391
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| 1, 2, 4, 5, 8, 10, 11, 13, 16, 17, 19, 21, 24, 25, 28, 29, 32, 33, 35, 37, 39, 41, 44, 46, 47, 49, 51, 53, 56, 57, 59, 61, 63, 65, 68, 69, 72, 73, 75, 77, 79, 81, 83, 85, 88, 90, 92, 94, 95, 97, 99, 101, 103, 105, 108, 109, 111, 113, 115, 117, 119, 121, 123, 125, 127, 129
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OFFSET
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1,2
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COMMENT
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If A131389 is a permutation of the integers, as conjectured, then A131391 is the complement of A131392.
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FORMULA
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a(n) = -1 + position of the n-th positive integer in the sequence A131389=(0,1,2,-1,3,4,-2,-3,6,-4,5,...)
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EXAMPLE
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The 5th positive integer to occur in A131391 is 6, which occurs in
position 9, so that a(5)=9-1=8.
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CROSSREFS
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Cf. A131388, A131389, A131390, A131392, A131393, A131394, A131395, A131396, A131397.
Sequence in context: A026174 A120685 A131396 this_sequence A138007 A047261 A102798
Adjacent sequences: A131388 A131389 A131390 this_sequence A131392 A131393 A131394
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KEYWORD
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nonn
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AUTHOR
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Clark Kimberling (ck6(AT)evansville.edu), Jul 06 2007
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