42720

Appears in sequences

• Expansion of (theta_3(z)*theta_3(2z)*theta_3(4z)+theta_2(z)*theta_2(2z)*theta_2(4z))^4.at n=39A028701
• Coordination sequence for lattice D*_4 (with edges defined by l_1 norm = 1).at n=20A035471
• White to move: King, Knight and Bishop vs. King: Number of positions with mate in n.at n=8A274683
• Numbers k such that the sum of the norm of divisors of k in Gaussian integers is divisible by k.at n=36A332736