86454

Appears in sequences

• Number of nX1 binary arrays with the number of 0-1 adjacencies equal to the number of 0-0 adjacencies.at n=20A183256
• a(n) is the number of decompositions of H(n,1) into disjoint unions of H(j,k) where H(j,k) is the set of numbers { (2*i-1)*(2*k-1), 1 <= i <= j }.at n=40A336739