3321891

Appears in sequences

• Expansion of 1/((1-x)^5 - x^5).at n=20A049016
• Expansion of (1-x)/((1-2x)(1+x-x^2)).at n=23A052964
• Number of walks of length 2n between two nodes at distance 4 in the cycle graph C_10.at n=10A095931
• a(n) = Sum_{k >= 0} binomial(n,5*k).at n=24A139398
• a(n) = Sum_{k >= 0} binomial(n,5*k+4).at n=24A139761
• sum_{k=floor[(n+5)/2] mod 5} C(n,k).at n=24A173126
• a(n) = Sum_{k=0..n} binomial(5*n+4,5*k).at n=4A345458
• a(n) = Sum_{k=0..n} binomial(2*n,5*k).at n=12A387844
• a(n) = Sum_{k=0..n} binomial(3*n,5*k).at n=8A387847
• a(n) = Sum_{k=0..n} binomial(4*n,5*k).at n=6A387848