414848

Appears in sequences

• Expansion of 1/(1+2*x+2*x^2-2*x^3).at n=21A077991
• Number of nX3 0..2 arrays with rows and columns in nondecreasing order.at n=5A184131
• Number of nX6 0..2 arrays with rows and columns in nondecreasing order.at n=2A184134
• T(n,k)=Number of nXk 0..2 arrays with rows and columns in nondecreasing order.at n=30A184137
• T(n,k)=Number of nXk 0..2 arrays with rows and columns in nondecreasing order.at n=33A184137
• Number of ballot sequences of length n with exactly 8 fixed points.at n=19A239119