538257874440
domain: N
Appears in sequences
- Central binomial coefficients: binomial(2*n,n) = (2*n)!/(n!)^2.at n=21A000984
- Binomial coefficient C(42,n).at n=21A010958
- a(n) = binomial(n,21).at n=21A010974
- Numerator of binomial(2n,n)/(2n+1).at n=21A056616
- a(n) = binomial(6*n,3*n).at n=7A066802
- Smallest integer of the form product (n+1)(n+2)...(n+k)/n!.at n=21A075055
- Expansion of 2sinh(x) + BesselI_0(2x).at n=42A081668
- Bisection of A000984.at n=10A099976
- a(n) = Sum_{k = 0..n} binomial(n,floor(k/2))*(-1)^(n-k).at n=42A126869
- Central binomial coefficients at triangular positions: a(n) = A000984(n(n+1)/2).at n=6A135757
- A trisection of A001405 (central binomial coefficients): binomial(3*n,floor(3*n/2)), n >= 0.at n=14A187442