233547

Appears in sequences

• Coefficient of q^3 in nu(n), where nu(0)=1, nu(1)=b and, for n>=2, nu(n)=b*nu(n-1)+lambda*(1+q+q^2+...+q^(n-2))*nu(n-2) with (b,lambda)=(1,3).at n=12A074357
• G.f. satisfies A(x) = 1 + x*cycle_index(Sym(7), A(x)).at n=16A182378
• Number of (n+1) X (4+1) 0..1 arrays with each row and column divisible by 3, read as a binary number with top and left being the most significant bits, and rows and columns lexicographically nondecreasing.at n=32A263869