204820
domain: N
Appears in sequences
- Expansion of (1-x)/((1-2x)(1+x-x^2)).at n=19A052964
- Number of walks of length 2n between two nodes at distance 4 in the cycle graph C_10.at n=8A095931
- Triangle read by rows: T(n,k) is the number of skew Dyck paths of semilength n and having k LL's (n >= 0; 0 <= k <= n-2 for n >= 2).at n=48A128724
- a(n) = Sum_{k>=0} binomial(n,5*k+2).at n=20A139714
- a(n) = Sum_{ k >= 0} binomial(n,5*k+3).at n=20A139748
- sum_{k=floor[(n+5)/2] mod 5} C(n,k).at n=20A173126