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A070964
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a(n) = Sum_{1<=k<=n, gcd(k,n)=1} Fibonacci(k).
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1
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1, 1, 2, 3, 7, 6, 20, 21, 44, 50, 143, 108, 376, 364, 738, 987, 2583, 1938, 6764, 6150, 13938, 17622, 46367, 34776, 113957, 121160, 257114, 306852, 832039, 549000, 2178308, 2178309, 4595932, 5701290, 13686704, 11197764, 39088168, 39083988
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OFFSET
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1,3
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LINKS
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EXAMPLE
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The 12th term is F(1) + F(5) + F(7) + F(11) = 1 + 5 + 13 + 89 = 108, where F(n) is the n-th Fibonacci number and 1, 5, 7 and 11 are the positive integers <= 12 and relatively prime to 12.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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