273250

Appears in sequences

• Number of 1X6 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 6-vectors with total modulus squared not more than 2*n^2, ignoring vector and component permutations).at n=26A192693
• Triangle read by rows, with T(n,k) giving the number of n X n Boolean matrices with exactly k ones having at least one zero row and at least one zero column.at n=42A392483