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A131392
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Positions of negative integers in A131389, minus 1.
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9
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3, 6, 7, 9, 12, 14, 15, 18, 20, 22, 23, 26, 27, 30, 31, 34, 36, 38, 40, 42, 43, 45, 48, 50, 52, 54, 55, 58, 60, 62, 64, 66, 67, 70, 71, 74, 76, 78, 80, 82, 84, 86, 87, 89, 91, 93, 96, 98, 100, 102, 104, 106, 107, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 131, 132
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| If A131389 is a permutation of the integers, as conjectured, then A131392 is the complement of A131391.
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FORMULA
| a(n) = -1 + position of the n-th negative integer in the sequence A131389=(0,1,2,-1,3,4,-2,-3,6,-4,5,...)
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EXAMPLE
| The 5th negative integer to occur in A131391 is -5, which occurs in position 13, so that a(5)=13-1=12.
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CROSSREFS
| Cf. A131388, A131389, A131390, A131391, A131393, A131394, A131395, A131396, A131397.
Sequence in context: A047242 A190335 A083951 * A131397 A176409 A120684
Adjacent sequences: A131389 A131390 A131391 * A131393 A131394 A131395
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KEYWORD
| nonn
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AUTHOR
| Clark Kimberling (ck6(AT)evansville.edu), Jul 06 2007
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