45562500

Appears in sequences

• Squares that remain squares when prefixed with a 9.at n=10A167044
• 1/4 the number of nX7 0..3 arrays with no element equal both to the element above and to the element to its left.at n=1A185565
• 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=29A185567