68311

Properties

Appears in sequences

• Primes p such that x^27 = 2 has no solution mod p, but x^9 = 2 has a solution mod p.at n=30A059354
• Primes p such that x^54 = 2 has no solution mod p, but x^18 = 2 has a solution mod p.at n=18A059666
• Primes p such that x^9 = 2 has a solution mod p, but x^(9^2) = 2 has no solution mod p.at n=32A070185
• Number of length n 0..4 arrays with each partial sum starting from the beginning no more than two standard deviations from its mean.at n=6A244828
• T(n,k) = Number of length n 0..k arrays with each partial sum starting from the beginning no more than two standard deviations from its mean.at n=51A244832
• Number of length 7 0..n arrays with each partial sum starting from the beginning no more than two standard deviations from its mean.at n=3A244838
• Number of compositions (ordered partitions) of n into hexagonal pyramidal numbers (A002412).at n=52A322854
• Beginning with 7, least prime such that concatenation of first n terms and its digit reversal both are primes.at n=23A379761
• Prime numbersat n=6797