4045117

Properties

Appears in sequences

• Number of solutions to k_1 + 2*k_2 + ... + n*k_n = 0, where k_i are from {-1,0,1}, i=1..n.at n=18A007576
• Largest coefficient in expansion of Product_{i=1..n} (1 + q^i + q^(2i)).at n=17A039826
• Prime numbersat n=286161