478807domain: NAppears in sequencesMain diagonal of Wythoff array: w(n,n)=[ n*tau ]F(n+1)+(n-1)F(n), where tau=(1+sqrt(5))/2, F(n) = Fibonacci numbers.at n=19A020941Fibonacci sequence beginning 6, 13.at n=23A022388Main diagonal of the Stolarsky array.at n=19A035489x-values in the solutions to x^2 - 5y^2 = 44.at n=24A228210