2842560

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=3A185561
• 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=2A185562
• 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=17A185567
• 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=18A185567