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

 

Logo

Invitation: celebrating 50 years of OEIS, 250000 sequences, and Sloane's 75th, there will be a conference at DIMACS, Rutgers, Oct 9-10 2014.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A020482 Greatest p with p, q both prime, p+q = 2n. 22
2, 3, 5, 7, 7, 11, 13, 13, 17, 19, 19, 23, 23, 23, 29, 31, 31, 31, 37, 37, 41, 43, 43, 47, 47, 47, 53, 53, 53, 59, 61, 61, 61, 67, 67, 71, 73, 73, 73, 79, 79, 83, 83, 83, 89, 89, 89, 79, 97, 97, 101, 103, 103, 107, 109, 109, 113, 113, 113, 109, 113, 113, 109, 127, 127, 131, 131 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

COMMENTS

a(n) = A171637(n,A035026(n)). - Reinhard Zumkeller, Mar 03 2014

LINKS

H. J. Smith, Table of n, a(n) for n = 2..20000

MATHEMATICA

a[n_] := {p, q} /. {ToRules @ Reduce[p+q == 2*n, {p, q}, Primes]} // Max; Table[a[n], {n, 2, 100}] (* Jean-Fran├žois Alcover, Dec 19 2013 *)

PROG

(Haskell)

a020482 = last . a171637_row  -- Reinhard Zumkeller, Mar 03 2014

CROSSREFS

Cf. A060264, A020481.

Sequence in context: A195882 A156900 A039734 * A060308 A224911 A064142

Adjacent sequences:  A020479 A020480 A020481 * A020483 A020484 A020485

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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

Content is available under The OEIS End-User License Agreement .

Last modified September 18 13:40 EDT 2014. Contains 246910 sequences.