144444441

Appears in sequences

• Expansion of x*(11 + 22*x + 20*x^2)/((1-x)*(1+x)*(1 - 10*x^2)).at n=15A094620
• Expansion of x*(11+13*x+20*x^2) / ( (x-1)*(1+x)*(10*x^2-1) ).at n=15A094621
• Expansion of x*(11+20*x)/((1-x)*(1-10*x^2)).at n=15A094622
• a(n) = n 4's sandwiched between two 1's.at n=7A205084