43498

Appears in sequences

• Number of chiral n-ominoes in n-2 space.at n=11A036365
• a(n) = (4*n^3 + 11*n^2 + 9*n + 2)/2.at n=27A135712
• Number of nX5 0..1 arrays avoiding 0 0 1 and 1 0 1 horizontally and 0 1 0 and 1 0 1 vertically.at n=5A207251
• T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 1 and 1 0 1 horizontally and 0 1 0 and 1 0 1 vertically.at n=50A207254
• Number of 6 X n 0..1 arrays avoiding 0 0 1 and 1 0 1 horizontally and 0 1 0 and 1 0 1 vertically.at n=4A207257
• G.f. satisfies: A(x) = (1 + x*(1-x)*A(x)) * (1 + x^2*A(x)).at n=21A216604