181608

Appears in sequences

• Numbers that can be expressed as the difference of the squares of primes in exactly ten distinct ways.at n=11A092006
• Number of (n+2)X(3+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 2 5 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 2 5 6 or 7.at n=7A252674
• a(n) = A351477(n) * FC where F is the Fermat point of a primitive integer-sided triangle ABC with A < B < C < 2*Pi/3 and FA + FB + FC = A336329(n).at n=23A351803
• G.f. A(x) satisfies: 1 - x = Product_{n>=1} (1 + x^(2*n)*A(x)^2) / (1 + x^n*A(x)).at n=15A352176