1444443

Appears in sequences

• a(n) = (10^n - 1)/9*prime(n).at n=5A064008
• Expansion of x*(11+13*x+20*x^2) / ( (x-1)*(1+x)*(10*x^2-1) ).at n=12A094621
• a(n) = 111111*n.at n=12A154549