370756241

Properties

Appears in sequences

• Number of subsequences of [ 1,...,n ] in which each even number has an odd neighbor.at n=31A007481
• a(n) = 3*a(n-1) + 2*a(n-2), with a(0)=2, a(1)=7.at n=15A007484
• Prime numbersat n=19856555