13333932

Appears in sequences

• Expansion of (1-x)/((1-2x)(1+x-x^2)).at n=25A052964
• Number of walks of length 2n between two nodes at distance 4 in the cycle graph C_10.at n=11A095931
• a(n) = Sum_{k>=0} binomial(n,5*k+1).at n=26A133476
• a(n) = Sum_{k >= 0} binomial(n,5*k).at n=26A139398
• sum_{k=floor[(n+5)/2] mod 5} C(n,k).at n=26A173126
• a(n) = Sum_{k=0..n} binomial(5*n+1,5*k).at n=5A345455
• a(n) = Sum_{k=0..n} binomial(3*n+2,5*k).at n=8A387038
• a(n) = Sum_{k=0..n} binomial(2*n,5*k).at n=13A387844
• a(n) = Sum_{k=0..n} binomial(4*n+2,5*k).at n=6A387905