149264

Appears in sequences

• Number of 4Xn 0..1 arrays with every element equal to 0, 1, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=12A303199
• G.f. satisfies A(x) = 1 + x/(1 + x^4) * A(x/(1 + x^4)).at n=23A360899