728848

Appears in sequences

• Number of 1X10 integer matrices with each row summing to zero, row elements in nondecreasing order, rows in lexicographically nondecreasing order, and the sum of squares of the elements <= 2*n^2 (number of collections of 1 zero-sum 10-vectors with total modulus squared not more than 2*n^2, ignoring vector and component permutations).at n=13A192697
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 169", based on the 5-celled von Neumann neighborhood.at n=9A270462