60048

Appears in sequences

• a(n) = n*(11*n^2 - 5)/6.at n=32A004467
• Number of ways to build a contiguous building with n LEGO blocks of size 1 X 3 on top of a fixed block of the same size so that the building is symmetric after a rotation by 180 degrees.at n=7A123775
• Totients t such that the number of divisors of t equals the number of solutions of phi(x) = t.at n=30A305058
• a(n) = 972*n^2 - 270*n (n>=1).at n=7A305071
• Infinitary Ruth-Aaron numbers: numbers k such that A181894(k) = A181894(k+1).at n=31A330999