+ 2) 300 = ? 2 span>
(? 2 + 2) 301 = ? 2 span> +6 ?
(? 2 + 2) 302 = ? 2 span> +5 ? +1
(? 2 + 2) 303 = 2 ? 2 +4 ? +4
(? 2 + 2) 304 = 6 ? 2 +2 ? +4
(? 2 + 2) 305 = 3 ? 2 +3 ? +6
(? 2 + 2) 306 = 2 ? 2 +2
(? 2 + 2) 307 = 4 ? 2 +5 ? +4
(? 2 + 2) 308 = ? 2 span> + ? +3
(