login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A132147 Numbers that are the sum of a prime number and a positive Fibonacci number. 4
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

This sequence is a subsequence of A132145 and is the complement of A132146.

Lee shows that this sequence has positive lower density. - Charles R Greathouse IV, Nov 02 2010

LINKS

T. D. Noe, Table of n, a(n) for n = 1..1000

K. S. Enoch Lee, On the sum of a prime and a Fibonacci number, arXiv:1011.0173 [math.NT], 2010.

EXAMPLE

11 = 3+8, the sum of a prime number (3) and a Fibonacci number (8).

MATHEMATICA

Take[Union[Flatten[Table[Fibonacci[n] + Prime[k], {n, 70}, {k, 70}]]], 70]

PROG

(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

CROSSREFS

Sequence in context: A026505 A029674 A192452 * A118955 A191838 A108473

Adjacent sequences:  A132144 A132145 A132146 * A132148 A132149 A132150

KEYWORD

nonn

AUTHOR

Tanya Khovanova, Aug 12 2007

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified August 23 04:06 EDT 2017. Contains 290958 sequences.