598507920

Appears in sequences

• 1/4 the number of n X n 0..3 arrays with no element equal both to the element above and to the element to its left.at n=3A185560
• 1/4 the number of n X 4 0..3 arrays with no element equal both to the element above and to the element to its left.at n=3A185562
• T(n,k)=1/4 the number of nXk 0..3 arrays with no element equal both to the element above and to the element to its left.at n=24A185567