841392966470domain: NAppears in sequencesBinomial coefficient C(n,40).at n=13A010993Binomial coefficients C(53,n).at n=13A017769a(n) = (4n+1)*binomial(4n,n)/(3n+1).at n=13A052203Terms at square positions in Pascal's triangle when in flattened form.at n=38A268295Number of dispersed Dyck prefixes of length 2n and height n.at n=26A283799