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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A161724 Primes n such that also n-24 and n+24 are primes. 2
29, 37, 43, 47, 83, 103, 107, 113, 127, 173, 257, 293, 307, 373, 397, 433, 443, 463, 467, 523, 547, 593, 617, 677, 733, 797, 853, 863, 883, 887, 953, 1063, 1093, 1283, 1303, 1423, 1447, 1583, 1723, 1777, 1847, 1973, 2003, 2063, 2087, 2113, 2137, 2333, 2357 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Apart from the first term, values are 3 or 7 mod 10.

Solutions of the equation (n-24)' + n' + (n+24)' = 3, where n' is the arithmetic derivative of n. [Paolo P. Lava, Nov 08 2012]

LINKS

Table of n, a(n) for n=1..49.

EXAMPLE

29-24=5,29+24=53; ...

MATHEMATICA

q=6*4; lst={}; Do[p=Prime[n]; If[PrimeQ[p-q] && PrimeQ[p+q], AppendTo[lst, p]], {n, 5000}]; lst

CROSSREFS

Cf. A006489, A137796, A161723.

Sequence in context: A166088 A295490 A172195 * A046502 A255204 A049746

Adjacent sequences:  A161721 A161722 A161723 * A161725 A161726 A161727

KEYWORD

nonn,easy

AUTHOR

Vladimir Joseph Stephan Orlovsky, Jun 17 2009

EXTENSIONS

Definition edited by Emeric Deutsch, Jun 28 2009

Comment from Charles R Greathouse IV, Oct 12 2009

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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 19 18:51 EDT 2019. Contains 326133 sequences. (Running on oeis4.)