117513

Appears in sequences

• Let p = prime(n). Smallest j such that q = j*2*p^3-1, r = j*p*2*q^2-1, s = j*p*2*r^2-1, and j*p*2*s^2-1 are prime numbers.at n=22A224612
• Triangle T(n,k) (n >= 1, 0 <= k <= n-1) read by rows: number of distinct permutations after k steps of the "optimist" algorithm.at n=37A345461
• Second column of A345461 - Number of distinct permutations after one step of the "optimist" sorting algorithm.at n=7A345464