63544

Appears in sequences

• Product(1 + a(n)*x^n, n=1..infinity) = sum(F(k+1)*x^k, k=1..infinity) = 1/(1-x-x^2), where F(n) = A000045(n) (Fibonacci numbers).at n=29A147542
• a(n) = 94*n^2.at n=26A174337
• 1/3 the number of n X 2 0..2 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.at n=7A185552
• 1/3 the number of nX8 0..2 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.at n=1A185558
• T(n,k)=1/3 the number of nXk 0..2 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.at n=37A185559
• T(n,k)=1/3 the number of nXk 0..2 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.at n=43A185559
• Number of length-n 0..2 arrays with no repeated value differing from the previous repeated value by one or less.at n=11A269601
• Practical numbers q with q + 2 and q^2 + 2 both practical.at n=29A294225