185641

Properties

Appears in sequences

• Triangle of (Gaussian) q-binomial coefficients for q=-21.at n=16A015146
• Triangle of (Gaussian) q-binomial coefficients for q=-21.at n=19A015146
• Numbers whose least quadratic nonresidue (A020649) is 29.at n=13A025029
• a(n) = n^4 - n^3 + n^2 - n + 1.at n=21A060884
• Primes with 41 as smallest positive primitive root.at n=1A114658
• Greatest prime factor of n^5 + 1.at n=20A240548
• Primitive prime factors of the cyclotomic polynomial sequence Phi(10,k) in the order in which they occur.at n=20A248874
• Primes of the form n^4 - n^3 + n^2 - n + 1.at n=8A259257
• Primes p such that the maximal length of a Buchi sequence in Z/pZ is less than the value of A124882 for that prime.at n=18A261404
• Primes of the form (c^k+1)/(c+1) not having a representation in the form (b^q-1)/(b-1), where b, c > 1 and k, q > 2.at n=14A343774
• To get a(n), replace 0's in the binary expansion of n with (-1) and interpret the result in base n.at n=21A360096
• Number of gap-free Carlitz compositions of n.at n=24A374726
• Prime numbersat n=16800