654833

Appears in sequences

• Number of (2n-1)X2 0..4n-3 arrays with upper left zero and lower right 4n-3 and each element differing from its horizontal and vertical neighbors by a power of three.at n=3A265213
• T(n,k) is the number of n X k 0..n*k-1 arrays with upper left zero and lower right n*k-1 and each element differing from its horizontal and vertical neighbors by a power of three.at n=29A265218
• T(n,k) is the number of n X k 0..n*k-1 arrays with upper left zero and lower right n*k-1 and each element differing from its horizontal and vertical neighbors by a power of three.at n=34A265218
• a(n) = a(n-3) + a(n-2) + gcd(a(n-2), a(n-1)) with a(1) = a(2) = a(3) = 1.at n=45A370202