185 0,1,3,8,22,63,185 相邻两数之间的差是1,2,5,14,41,122 而1,2,5,14,41,122之间分别相差1,3,9,27,81 即3^0,3^1,3^2,3^3,3^4 3-2*1+0=1=3^0 8-2*3+1=3=3^1 22-2*8+3=9=3^2 63-2*22+8=27=3^3 185-2*63+22=81=3^4...