https://s0.wp.com/latex.php?latex=%5Cdisplaystyle++%281+%2B4+%5Cvarpi%29+%281-2%5Ckappa_1+-+2%5Ckappa_2+-+2%5Ckappa_3%29+%3E+%5Cfrac%7Bj%5E2_%7Bk_0-2%7D%7D%7Bk_0%28k_0-1%29%7D&bg=ffffff&fg=000000&s=0