[seqfan] Re: No right isosceles triangles in a square grid

Giovanni Resta g.resta at iit.cnr.it
Fri Apr 22 19:35:20 CEST 2016


Il 22/04/2016 17:34, Neil Sloane ha scritto:
>> 1, 2, 4, 6, 8, 10, 12, 14, 14, 16, 20
> Could there be a typo? Did you mean to say
Yes, sorry. I did make a mess merging results from Mathematica, lp_solve 
and cplex.
It is 1,2,4,6,8,10,12,14,16,18 (I'm checking again a(11)=20 because I 
deleted the result),
  i.e.,  it seems simply a(1)=1 and a(n)=2n-2 up to a(10).

I'm going to check again the results when I prepare the pictures. Sorry 
for the error,
Giovanni


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