elem.7.def.9

An even-times odd number is that which is measured by an even number according to an odd number. Ἀρτιάκις δὲ περισσός ἐστιν ὁ ὑπὸ ἀρτίου ἀριθμοῦ μετρούμενος κατὰ περισσὸν ἀριθμόν. &`10 1$