430321633

Appears in sequences

• Number of dissections of a polygon: binomial(7n,n)/(6n+1).at n=9A002296
• G.f. A(x) satisfies A(x) = 1 + x*A(x)^4*A(-x)^3.at n=18A143547
• Triangle T read by rows: n-th row (n>=0) gives the non-vanishing coefficients of the polynomial q(n,x) = 2^(-n)*((x+1)^(2^n) - (x-1)^(2^n))/2.at n=36A281123