, , . "" . b, a ³ b, . b = nb + b1, n - , b1 - 0, , b (0 £ b1 < b). :

ni - 0 £ b1< bi-1 , , . bk+1 , (*) : bk-2 = nk-1 + bk, bk-1 = nkbk.

b b. . . , . . (. ) . . .

: