118121

Appears in sequences

• Number of 7 X 7 binary matrices with n ones, with no zero rows or columns, up to row and column permutation.at n=9A056079
• Number of 12X2 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 12 zero-sum 2-vectors with total modulus squared not more than 2*n^2, ignoring vector and component permutations).at n=15A192713