1405622460

Appears in sequences

• Number of (s(0), s(1), ..., s(2n)) such that s(i) is a nonnegative integer and |s(i) - s(i-1)| = 1 for i = 1,2,...,n, s(0) = 3, s(2n) = 3. Also T(2n,n), where T is defined in A026022.at n=17A026029
• T(n,[ n/2 ]), where T is defined in A026022.at n=34A026034