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A115043
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a(0)=3, a(1)=5. a(n) = a(n-1)*a(n-2) if n odd, else a(n) = a(n-1)/a(n-2).
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1
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3, 5, 15, 3, 45, 15, 675, 45, 30375, 675, 20503125, 30375, 622782421875, 20503125, 12768985843505859375, 622782421875, 7952299928506168842315673828125, 12768985843505859375
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OFFSET
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0,1
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COMMENTS
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All divisors >1 of the terms are also in the sequence.
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LINKS
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FORMULA
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a(n) = a(n-2)*a(n-4) if n odd. a(n)=a(n-3) if n even.
a(2n+1) = 3^Fibonacci(n+1) * 5^Fibonacci(n).
a(2n) = 3^Fibonacci(n-1) * 5^Fibonacci(n-2).
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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