40809

Appears in sequences

• Number of (w,x,y,z) with all terms in {1,...,n} and w > harmonic mean of {x,y,z}.at n=16A212105
• Number of solutions to c(1)*prime(4) + c(2)*prime(5) + ... + c(2n-1)*prime(2n+2) = -1, where c(i) = +-1 for i>1, c(1) = 1.at n=12A261045