70711

Appears in sequences

• a(n) is root of square starting with digit 5: first term of runs.at n=7A035072
• Expansion of (1+2*x^3)/(1-x+x^3-2*x^4).at n=42A103750
• a(n) = n*(5*n^2-8*n+5)/2.at n=31A226449