>>960
x^20-30 x^19+415 x^18-3510 x^17+20295 x^16-84996 x^15+266610 x^14-639180 x^13+1185645 x^12-1713690 x^11+1936881 x^10-1713690 x^9+1185645 x^8-639180 x^7+266610 x^6-84996 x^5+20295 x^4-3510 x^3+415 x^2-30 x+1