428640

Appears in sequences

• a(n) = lcm(3n+1, 3n+2, 3n+3).at n=31A061495
• Quartic product sequence: m = 4; p = 4^3; a(n) = Product_{k=1..(n-1)/2} ( 1 + m*cos(k*Pi/n)^2 + p*cos(k*Pi/n)^4 ).at n=12A152098