77693

Appears in sequences

• Number of 5X2 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 5 zero-sum 2-vectors with total modulus squared not more than 2*n^2, ignoring vector and component permutations).at n=31A192705
• Odd numbers k such that phi(k) = phi(k+2), where phi is the Euler totient function (A000010).at n=9A333741