37221

Appears in sequences

• Expansion of (2 + 2*x - 3*x^2) / (1 - 2*x - x^2 + x^3).at n=12A033304
• Number of binary strings of length n with equal numbers of 000 and 101 substrings.at n=18A164140
• Number of unlabeled rooted trees with n nodes where the outdegrees (branching factors) of adjacent nodes differ by at most one.at n=22A260403
• Sum of n-th powers of the three roots of x^3-2*x^2-x+1.at n=13A274975
• Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 7 or 8 king-move adjacent elements, with upper left element zero.at n=4A317114
• Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 7 or 8 king-move adjacent elements, with upper left element zero.at n=3A317115
• T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 7 or 8 king-move adjacent elements, with upper left element zero.at n=31A317118
• T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 7 or 8 king-move adjacent elements, with upper left element zero.at n=32A317118