178848

Appears in sequences

• Number of binary trees of path length n.at n=41A095830
• a(n) = 6*a(n-1)-6*a(n-2) for n > 1; a(0) = 5, a(1) = 18.at n=7A162814
• Number of (7+1) X (n+1) 0..1 arrays with every 2 X 2 subblock ne-sw antidiagonal difference nondecreasing horizontally and nw+se diagonal sum nondecreasing vertically.at n=27A258560
• Wiener index of the n X n rook complement graph.at n=23A292058
• Triangular array read by rows. T(n, k) is the coefficient of x^k in a(n+3) where a(1) = a(2) = a(3) = 1 and a(m+2) = (m*x + 2)*a(m+1) - a(m) for all m in Z.at n=43A358735
• Numbers that have exactly two exponents in their prime factorization that are equal to 5.at n=8A386809