[seqfan] Re: Alternating Vertical and Horizontal Moves In Grid

Jaume Oliver i Lafont joliverlafont at gmail.com
Wed Feb 25 20:55:07 CET 2009

Giovanni said:

>>I found that for n=12, instead of 121 as in the sequence you
>>linked, I got 134,

That's good, not bad! 134 is 2*67, and 67 is the number after 46 in
A130883 so it also follows the pattern. I have probably explained the
procedure poorly: there are two different halvings, one due to
bisection -take only values from even indexes of your sequence- and
another one that comes from dividing these values by 2, since they are
all even. It would be nice if your program obtained 2*92=184 for n=14
and 2*121=242 for n=16.


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