159749820

Appears in sequences

• 1/4 the number of n X 3 0..3 arrays with no element equal both to the element above and to the element to its left.at n=4A185561
• 1/4 the number of n X 5 0..3 arrays with no element equal both to the element above and to the element to its left.at n=2A185563
• 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=23A185567
• 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=25A185567