LXX Gen 41:27

καὶ αἱ ἑπτὰ βόες αἱ λεπταὶ αἱ ἀναβαίνουσαι ὀπίσω αὐτῶν ἑπτὰ ἔτη ἐστίν, καὶ οἱ ἑπτὰ στάχυες οἱ λεπτοὶ καὶ ἀνεμόφθοροι ἔσονται ἑπτὰ ἔτη λιμοῦ.

Moreover, the seven thin, ugly cows that came up after them are seven years, and so are the seven worthless heads of grain scorched by the east wind—they are seven years of famine.