148594

Appears in sequences

• 1/16 the number of (n+1) X (n+1) 0..3 arrays with all 2 X 2 subblocks having the same four values.at n=13A184030
• G.f. satisfies: A(x) = A(x^2 + x^3)/(1-x).at n=25A251572
• G.f. satisfies A(x) = 1 + x*A(x) / (1 - x^5*A(x)^3).at n=21A365735