18772741

Appears in sequences

• Main 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=26A020941
• Fibonacci sequence beginning 1, 8.at n=32A022098
• Main diagonal of the Stolarsky array.at n=26A035489
• a(n) = 3*a(n-1) - a(n-2) with a(0)=1, a(1)=9.at n=16A055849
• Sum of all n-digit Lucas numbers.at n=6A116964