1010295

Appears in sequences

• Number of subsequences of [ 1,...,n ] in which each odd number has an even neighbor.at n=22A007455
• Number of subsequences of [ 1,...,n ] in which each even number has an odd neighbor.at n=22A007481
• a(n) is the number of subsequences of [ 1, ..., 2n ] in which each odd number has an even neighbor.at n=11A007482