74155

Appears in sequences

• Expansion of x*(x^3+3*x^2-1)*(5*x^4-5*x^2+1) / ( -1+x+8*x^2-7*x^3-21*x^4+15*x^5+20*x^6-10*x^7-5*x^8+x^9 ).at n=22A122604
• Numbers k such that k - sopfr(k) is a positive cube.at n=31A389889