11274289152
domain: N
Appears in sequences
- Expansion of (1-x+4*x^2)/(1-2*x)^2.at n=28A167667
- a(n) = 21*2^n.at n=29A175805
- Expansion of x^4*(1 - x)^2*(1 - 3*x^2 - 2*x^3 + x^4 - x^5)/(1 - 2*x)^3.at n=33A192886
- Triangular array read by rows: T(n, k) is the number of ways that a k-element transitive tournament can occur as a subtournament of a larger tournament on n labeled vertices.at n=39A365638