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A291352
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Numerators of the Collatz parity generator fractions.
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0
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1, 3, 7, 191, 25983, 2663063519, 7160414743310596607, 208229791652776621349215306687873023871, 45218742589363955614633859184750699518167124046103786511727246869388335095775
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OFFSET
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1,2
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COMMENTS
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a(n) is a numerator of a fraction of the form a(n)/(2^2^n + 1) whose expansion into a repeating binary string models the n-th parity in the Collatz orbit of an integer.
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LINKS
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EXAMPLE
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a(1)=1 => f(1) = 1/3 => b(1) = 101010...
a(2)=3 => f(2) = 3/5 => b(2) = 10011001...
elements in b(2) determine the parity of elements at index 2 in the Collatz parity sequence of an integer.
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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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