47607

Appears in sequences

• Number of commutative elements in Coxeter group H_n.at n=8A013981
• Expansion of g.f. 1/sqrt((1-3*x)*(1-11*x)).at n=5A248168
• Triangle read by rows: T(n,k) appears in the transformation Sum_{k=0..n} (k+1)*x^k = Sum_{k=0..n} T(n,k)*(x+2k)^k.at n=42A253381
• Number of (0, 1)-necklaces with n zeros and n ones without zigzags (see reference for precise definition).at n=17A263658