[seqfan] Re: A264041

Chris cgribble263 at btinternet.com
Sun Nov 8 13:14:25 CET 2015


>From observation, the 2nd differences of A264041(n), n odd, are 5, 3, 4, 5, 3, 4, ...,
so I predict a(27) to be 382.
Best regards,
Chris Gribble

On Thu, Nov 5, 2015 at 8:11 PM, <israel at math.ubc.ca> wrote:

> Thanks, Rob. That seems like a good idea: this problem has maximal 
> 4-cliques (corresponding to slashes meeting at an interior vertex) as 
> well as 2-cliques. However, it still doesn't look like Cplex is going 
> to manage to compute a(27) on my computer.
>
> Cheers,
> Robert




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