164921

Appears in sequences

• Number of numbers == 0 (mod 3) in range 2^n to 2^(n+1) with odd number of 1's in binary expansion.at n=19A000773
• Generalized Poly-Bernoulli numbers.at n=9A081674
• a(n) = Sum_{2*i+3*j=n, 0<=i<=n, 0<=j<=n} n!/( (2*i)!*(3*j)! ).at n=20A094715
• Coefficients of x in the reduction of the polynomial p(n,x) = ((x+2)^n + (x-2)^n)/2 by x^2->x+2.at n=10A192356
• Power floor sequence of (golden ratio)^5.at n=4A214993
• Expansion of x^2*(1-x)^3/((1-2*x)*(1-x+x^2)*(1-3*x+3x^2)).at n=20A227430
• a(n) = Sum_{k=0..floor(n/6)} binomial(n,6*k).at n=20A306847
• Cogrowth sequence of the 12-element group C6 X C2 = <S,T | S^6, T^2, [S,T]>.at n=10A377627
• a(n) = Sum_{k=0..n} binomial(4*n,6*k).at n=5A387849
• a(n) = Sum_{k=0..n} binomial(5*n,6*k).at n=4A387850