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Number of nX2 0..2 arrays with no three equal values forming an isosceles triangle, and new values introduced in 0..2 order.
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%I #4 Jun 09 2016 08:07:00

%S 2,9,50,285,1129,4791,17219,63640,182143,598332,1622713,4807733,

%T 12097755,34041279,81727927,221397591,519077550,1343959858,3089610203,

%U 7776466084,17320256047,42922087359,94826300116,228462204560

%N Number of nX2 0..2 arrays with no three equal values forming an isosceles triangle, and new values introduced in 0..2 order.

%C Column 2 of A274068.

%e Some solutions for n=5

%e ..0..1. .0..1. .0..1. .0..1. .0..1. .0..1. .0..1. .0..1. .0..1. .0..1

%e ..1..2. .1..2. .1..0. .0..1. .0..2. .0..2. .2..0. .2..2. .0..1. .2..0

%e ..1..2. .0..2. .2..2. .0..2. .1..2. .2..0. .2..1. .1..0. .0..2. .2..1

%e ..1..0. .2..1. .0..1. .2..0. .1..0. .1..1. .2..0. .2..0. .2..0. .0..0

%e ..1..2. .0..0. .0..2. .1..0. .2..2. .2..0. .1..2. .1..0. .2..1. .1..2

%Y Cf. A274068.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jun 09 2016