68048

Appears in sequences

• a(n) = n*(4*n^2+5*n-3)/2.at n=31A126335
• Constant term in the reduction by (x^2 -> x + 1) of the polynomial p(n,x) defined below at Comments.at n=11A192906
• Numbers n such that the sum of first n prime powers (A025475) is divisible by n.at n=9A225791