68006

Appears in sequences

• Coefficient of x in the reduction by x^2 -> x+1 of the polynomial p(n,x) defined at Comments.at n=19A192970
• Number of n X 3 arrays of occupancy after each element stays put or moves to some horizontal, vertical or antidiagonal neighbor, with no occupancy greater than 2.at n=3A221375
• Number of n X 4 arrays of occupancy after each element stays put or moves to some horizontal, vertical or antidiagonal neighbor, with no occupancy greater than 2.at n=2A221376
• T(n,k)=Number of n X k arrays of occupancy after each element stays put or moves to some horizontal, vertical or antidiagonal neighbor, with no occupancy greater than 2.at n=17A221378
• T(n,k)=Number of n X k arrays of occupancy after each element stays put or moves to some horizontal, vertical or antidiagonal neighbor, with no occupancy greater than 2.at n=18A221378
• G.f. A(x) satisfies: Sum_{n>=0} ( (1+x)^n + 1/A(x) )^n / 3^(n+1) = 1.at n=4A319465