28370

Appears in sequences

• a(n) = 2809*n^2 - 4618*n + 1898.at n=3A157757
• Number of n X 4 integer arrays with each element equal to the number of horizontal and antidiagonal neighbors equal to itself.at n=19A266008
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 461", based on the 5-celled von Neumann neighborhood.at n=34A272293