534689

Appears in sequences

• a(n) = n^5 - n^3 - 2*n^2 + 1.at n=14A177075
• Semiprimes of the form n^5-n^3-2*n^2+1.at n=5A177087
• Let b(n) = 2^n with n >= 2, and let c = k*b(n) + 1 for k >= 1; then a(n) is the smallest k such that c is prime and such that A007814(r(n)) = A007814(k) + n where r(n) is the remainder of 2^(b(n)/4) mod c, or 0 if no such k exists.at n=21A298669
• a(n) is the minimum positive integer m such that m * 2^(n + 2) + 1 is a prime number which does not divide ((F(n + 2) - 1)^m - 1)/(F(n + 2) - 2), where F(n) is the n-th Fermat number (A000215).at n=21A308695