391249

Properties

Appears in sequences

• Primes of form n^4 + n^2 - 1.at n=10A174819
• Primes of the form m = 5^i + 5^j - 1, where i > j >= 0.at n=8A239715
• a(n) = MPR2(n, 4), where MPR2(n, x) is the (monic) minimal polynomial of 2*cos(2*Pi/n) as defined in A232624.at n=32A309040
• Prime numbersat n=33170