5562368

Appears in sequences

• a(n+2) = 2*a(n+1) + 2*a(n); a(0) = -1, a(1) = 1.at n=18A028860
• Expansion of g.f. (1-2*x^2)/(1-2*x-2*x^2).at n=16A152035
• Expansion of 2*x^2 / (1-2*x-2*x^2).at n=17A293007
• Number of nX6 0..1 arrays with every element unequal to 0, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=12A318421