75610

Appears in sequences

• A Collatz-Fibonacci mixture: a(1) = 1, a(2) = 2, a(n+2) = a(n+1)/2+a(n)/2 if a(n+1) and a(n) have the same parity, a(n+2) = a(n+1)+a(n) otherwise.at n=46A069202
• a(n) = 3*a(n-1) + 7*a(n-2), with a(1) = 1, a(2) = 10.at n=7A137280
• Good approximation to the 10^n-th lower twin prime.at n=2A146310