167376

Appears in sequences

• G.f. satisfies: A(x) = (1 + x*A(x))*(1 + x^2*A(x)^4).at n=10A198957
• Triangle read by rows: Number of walks from (0,0) to (3n,3k) on the square lattice with up and right steps where squares (x,y)=(1,1) mod 3 or (x,y)=(2,2) mod 3 are not entered.at n=41A348595