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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A097361 Primes of the form 2(p+q) - 1, where p and q are consecutive primes. 3
23, 47, 59, 71, 83, 103, 167, 179, 199, 223, 239, 419, 431, 443, 479, 599, 659, 719, 743, 911, 983, 1039, 1063, 1151, 1259, 1367, 1423, 1451, 1523, 1543, 1571, 1619, 1783, 1811, 1847, 1931, 1979, 2003, 2087, 2207, 2239, 2383, 2399, 2459, 2543, 2579, 2699 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(n) == 3 (mod 4).

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

MATHEMATICA

Select[ Table[2(Prime[i] + Prime[i + 1]) - 1, {i, 150}], PrimeQ[ # ] &] (* Robert G. Wilson v, Sep 19 2004 *)

Select[2*Total[#]-1&/@Partition[Prime[Range[200]], 2, 1], PrimeQ] (* Harvey P. Dale, Oct 15 2015 *)

CROSSREFS

Cf. A097358, A098649.

Sequence in context: A121762 A185935 A052159 * A073025 A209193 A201019

Adjacent sequences:  A097358 A097359 A097360 * A097362 A097363 A097364

KEYWORD

nonn,easy

AUTHOR

Giovanni Teofilatto, Sep 18 2004

EXTENSIONS

More terms from Robert G. Wilson v, Sep 19 2004

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 September 18 17:45 EDT 2019. Contains 327178 sequences. (Running on oeis4.)