1848483780

Appears in sequences

• Expansion of 1/(1-4*x)^(11/2).at n=10A020922
• a(n) = (6n)!n!/((3n)!(2n)!^2).at n=5A061162
• a(n) = ((3*n)!/n!^2)*(Gamma(1+n/2)/Gamma(1+3n/2)).at n=10A091527
• Numbers with a record number of distinct values of the unitary totient function applied to their unitary divisors (A348001).at n=26A348002
• Square array read by ascending antidiagonals: T(n,k) = [x^(2*k)] ( (1 + x)^(n+2)/(1 - x)^(n-2) )^k for n, k >= 0.at n=50A364518