200400

Appears in sequences

• Number of 4 X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 1 1 1 vertically.at n=8A207847
• Expansion of x^6/((1 - x)^2*(1 - 2*x + x^3 - x^4)).at n=17A290986