mersenneforum.org  

Go Back   mersenneforum.org > Extra Stuff > Blogorrhea > science_man_88

Closed Thread
 
Thread Tools
Old 2018-02-24, 17:30   #23
science_man_88
 
science_man_88's Avatar
 
"Forget I exist"
Jul 2009
Dumbassville

26·131 Posts
Default https://oeis.org/draft/A158709

Quote:
Apart from the first term, primes such that a Goldbach partition with a pair of them, will lead to a Goldbach partition for the next even number in their sums Collatz chain.
I was told to blog this in PM. Examples:

6=3+3 ->10=5+5; 10=3+7->16=5+11 did have a rough 21 digit example, but may have to find it again.

Quote:
Example: 100000000000000008947+ 100000000000000008899 =200000000000000017846
->150000000000000013349+150000000000000013421 =300000000000000026770

Last fiddled with by science_man_88 on 2018-02-25 at 01:13
science_man_88 is offline  
Old 2018-06-14, 15:44   #24
science_man_88
 
science_man_88's Avatar
 
"Forget I exist"
Jul 2009
Dumbassville

26×131 Posts
Default

Code:
my(a=0,b=[]);for(x=1,n,if((a-x)>0&&setminus(b,[a-x])==[],b=concat(b,[a-x]);a-=x;print(a),if(setminus(b,[a+x])==[],b=concat(b,[a+x]);a+=x;print(a),print("fails at x="x);break())))
Fails at x=26 apparently.

Last fiddled with by science_man_88 on 2018-06-14 at 15:44
science_man_88 is offline  
Old 2018-10-19, 23:00   #25
science_man_88
 
science_man_88's Avatar
 
"Forget I exist"
Jul 2009
Dumbassville

26×131 Posts
Default Yes I'm weird

Code:
my(s=self());return(select(r->r=="e",Vec(Str(s))))
A code that searches itself.
science_man_88 is offline  
Closed Thread

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Post 200000 Raman Lounge 19 2016-10-07 06:17
Where to post job ad? xilman Linux 2 2010-12-15 16:39
Post numbers - what now? henryzz Forum Feedback 26 2008-12-24 14:21
Can't post to other forums Unregistered Forum Feedback 27 2007-04-04 04:56
Something that I just had to post/buy dave_0273 Lounge 1 2005-02-27 18:36

All times are UTC. The time now is 20:08.

Fri Jul 10 20:08:36 UTC 2020 up 107 days, 17:41, 2 users, load averages: 2.25, 2.11, 1.84

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.