47437501

Properties

Appears in sequences

• a(n) = 5^n - ( (sqrt(5)*phi)^n + (sqrt(5)/phi)^n ) + 1, where phi = golden ratio A001622.at n=11A245561
• Norms of the Mersenne primes M_{p, 2 + phi} = (2 + phi)^p - 1 in quadratic ring Z[phi], where p is a rational prime and phi = (1 + sqrt(5))/2.at n=2A390618
• Prime numbersat n=2856398