39427

Appears in sequences

• Number of 2 X 2 regular integer matrices with elements from {0,...,n} up to row and column permutation.at n=19A064363
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 451", based on the 5-celled von Neumann neighborhood.at n=40A272258
• Number of nX5 0..1 arrays with no element equal to more than two of its horizontal, vertical and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.at n=8A280601
• Coefficient of x^(2*n) in (-1 + Product_{k>=1} 1 / (1 + x^k))^n.at n=12A341265