2404321560
domain: N
Appears in sequences
- Coefficients of Legendre polynomials.at n=15A001800
- Expansion of 1/(2*x) * (1/(1-4*x)^(3/2)-1).at n=14A033876
- A triangle of coefficients: T(n,m) = (2*n + 2*m + 3)! / (2*(2*m + 1)!*(2*n + 1)!).at n=35A143083
- a(n) = 4*C(2n,n) - 3*0^n.at n=16A146534
- a(n) = 4*(2*n)! / (n!)^2.at n=16A240530
- a(n) = 2^n*binomial((n + 1 + (n mod 2))/2, 1/2).at n=29A242172
- Number of permutations of length n such that numbers at odd positions are monotone and numbers at even positions are also monotone.at n=32A257546
- Expansion of (x*(1-4*x^2)^(-3/2) + (1-4*x^2)^(-1/2) + x + 1)/2.at n=31A275324