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

[Jaume Oliver i Lafont]

Giovanni said:
>Starting everywhere:
>http://ilex.iit.cnr.it/resta/Leroy.pdf
>1,4,7,14,19,32,39,58,67,92

>Starting in a corner:
>http://ilex.iit.cnr.it/resta/Leroy2.pdf
>1,4,6,14,18,32,38,58,66,92

The difference between these sequences starts 0,0,1,0,1,0,1,0...
so the second bisection of both sequences seems to be the same: 4,14,32,58,92...
This is not on the EIS, but one half of it appears only once, with a
simple closed form that makes sense to this problem.
http://www.research.att.com/~njas/sequences/?q=2,7,16,29,46

Jaume