109779

Appears in sequences

• a(n) = Sum_{k=0..n-3} T(n,k) * T(n,k+3), with T given by A026681.at n=6A026989
• a(n) is the smallest m such that p = n-th popular prime = A385503(n) is uniquely popular on the interval [2,m] or -1 if p is never uniquely popular.at n=8A289662