A273965 - OEIS

%I #4 Jun 05 2016 14:36:38

%S 2,10,105,1264,13045,136063,1273961,11936399,95697853,800561388,

%T 5824237329,42821430074,277065391875

%N Number of nX2 0..3 arrays with no three equal values forming an isosceles triangle, and new values introduced in 0..3 order.

%C Column 2 of A273968.

%e Some solutions for n=4

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

%e ..2..3. .2..1. .1..2. .2..1. .1..2. .1..2. .1..1. .2..2. .1..1. .0..2

%e ..2..3. .0..0. .3..0. .3..3. .3..2. .1..2. .2..0. .1..0. .0..2. .0..2

%e ..3..1. .2..3. .3..2. .1..1. .2..0. .0..3. .2..1. .1..0. .1..3. .1..2

%Y Cf. A273968.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jun 05 2016