login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A335360 Numbers m such that the number of unordered Goldbach partitions of 2m is greater than the number of unordered Goldbach partitions of 4m. 0
17, 32, 38, 143, 353 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Integers m such that A002375(2*m) > A002375(4*m) .

It is conjectured that a(5)=353 is the last term in this sequence.

LINKS

Table of n, a(n) for n=1..5.

Index entries for sequences related to Goldbach conjecture

EXAMPLE

For a(1)=17, 2*17=34 has 4 Goldbach partitions and 4*17=68 has 2.

PROG

(PARI) for(n=1, 1000, x=0; y=0; forprime(i=2, 2*n, if(i<=n && isprime(2*n-i), x=x+1; ); if(isprime(4*n-i), y=y+1; ); ); if(x>y, print1(n, ", ")))

CROSSREFS

Cf. A002375.

Sequence in context: A275994 A046990 A059212 * A058899 A038354 A043127

Adjacent sequences:  A335357 A335358 A335359 * A335361 A335362 A335363

KEYWORD

nonn,more

AUTHOR

Craig J. Beisel, Jun 03 2020

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 27 10:04 EDT 2022. Contains 354896 sequences. (Running on oeis4.)