729520967450
domain: N
Appears in sequences
- a(n) = Sum_{k=0..n} binomial(6*n,6*k).at n=7A070967
- Constant term of the reduction of the polynomial p(n,x)=(1/2)((x+2)^n+(x-2)^n) by x^2->x+2.at n=21A192355
- Number of (n+1) X (1+1) 0..3 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction.at n=16A250870
- Cogrowth sequence of the 12-element group C6 X C2 = <S,T | S^6, T^2, [S,T]>.at n=21A377627
- Cogrowth sequence for the 18-element group C6 X C3 = <S,T | S^6, T^3, [S,T]>.at n=14A378031