2884834891

Appears in sequences

• a(n) = Sum_{2*i+3*j=n, 0<=i<=n, 0<=j<=n} n!/( (2*i)!*(3*j)! ).at n=34A094715
• 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=17A192356
• a(n) = Sum_{k=0..floor(n/6)} binomial(n,6*k).at n=34A306847
• Cogrowth sequence of the 12-element group C6 X C2 = <S,T | S^6, T^2, [S,T]>.at n=17A377627
• a(n) = Sum_{k=0..n} binomial(3*n+1,6*k).at n=11A387875
• a(n) = Sum_{k=0..n} binomial(6*n+4,6*k).at n=5A387878