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A214738
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a(n) is the least m > 0 such that n-m divides Fibonacci(n)+m.
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2
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1, 2, 3, 3, 4, 2, 7, 8, 5, 1, 6, 7, 13, 10, 15, 11, 16, 4, 15, 10, 19, 3, 12, 6, 17, 22, 27, 27, 20, 6, 21, 32, 27, 10, 3, 16, 37, 14, 35, 23, 11, 3, 43, 40, 37, 7, 24, 47, 25, 26, 21, 31, 52, 5, 37, 28, 57, 9, 30, 19, 61, 26, 63, 35, 64, 2, 67, 68, 55, 1, 36, 71, 41, 50
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OFFSET
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2,2
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LINKS
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EXAMPLE
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Write x#y if x|y is false; then 9#56, 8#57, 7#58, 6#59, 5|60, so a(10) = 5.
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MATHEMATICA
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Table[m = 1; While[! Divisible[Fibonacci[n]+m, n - m], m++]; m, {n, 2, 100}]
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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