A233140 - OEIS

A233140

Number of n X n 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order

%I #5 Dec 18 2015 18:18:48

%S 1,16,13259,198313130,39758352524643,104628720219120084935,

%T 3612824935976380302597462081,1636876887880533270191858718052988313

%N Number of n X n 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order

%C Diagonal of A233147

%e Some solutions for n=3

%e ..0..0..1....0..1..2....0..1..2....0..0..1....0..1..2....0..1..5....0..1..5

%e ..4..0..1....3..0..4....2..0..1....4..2..0....1..5..4....1..5..2....2..2..4

%e ..2..1..1....0..4..0....1..0..0....0..4..4....5..5..3....5..1..5....5..4..5

%K nonn

%O 1,2

%A _R. H. Hardin_, Dec 04 2013