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A132147
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Numbers that are the sum of a prime number and a positive Fibonacci number.
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5
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3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 30, 31, 32, 33, 34, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76
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OFFSET
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1,1
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COMMENTS
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This sequence is a subsequence of A132145 and is the complement of A132146.
The lower density of this sequence is at least 0.0254905 (Liu and Xue, 2021). - Amiram Eldar, Mar 04 2021
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LINKS
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EXAMPLE
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11 = 3+8 is a term since it is the sum of a prime number (3) and a Fibonacci number (8).
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MATHEMATICA
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Take[Union[Flatten[Table[Fibonacci[n] + Prime[k], {n, 70}, {k, 70}]]], 70]
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PROG
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(PARI) is(n)=my(k, f); while((f=fibonacci(k++))<n, if(isprime(n-f), return(1))); 0 \\ Charles R Greathouse IV, Sep 14 2015
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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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