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A121730
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a(n) = the smallest positive integer which does not occur earlier in the sequence and which is coprime to the n-th Fibonacci number.
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1
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1, 2, 3, 4, 6, 5, 7, 8, 9, 12, 10, 11, 13, 14, 17, 16, 15, 21, 18, 19, 23, 20, 22, 25, 24, 26, 27, 28, 29, 37, 30, 31, 33, 32, 34, 35, 36, 38, 39, 43, 40, 41, 42, 44, 47, 45, 46, 53, 48, 49, 51, 50, 52, 55, 54, 59, 57, 56, 58, 67, 60, 61, 63, 62, 64, 65, 66, 68, 69, 72, 70, 71
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Sequence is a permutation of the positive integers.
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EXAMPLE
| 55 is the 10th Fibonacci number. Among those positive integers not occurring among the first 9 terms of the sequence, 12 is the smallest which is coprime to 55, so a(10) = 12. 10 and 11 also do not occur among the first 9 terms of the sequence, but they are not coprime to 55.
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CROSSREFS
| Cf. A000045, A121731.
Sequence in context: A130946 A073284 A057511 * A062894 A129606 A057510
Adjacent sequences: A121727 A121728 A121729 * A121731 A121732 A121733
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KEYWORD
| nonn
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AUTHOR
| Leroy Quet Aug 18 2006
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EXTENSIONS
| Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Aug 22 2006
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