Haruka and Mustafa were asked to find an explicit formula for the sequence 4\,,\,12\,,\,36\,,\,108,...4,12,36,108,...4, comma, 12, comma, 36, comma, 108, comma, point, point, point. Haruka said the formula is g(n)=4\cdot3^{\large{n}}g(n)=4⋅3 n g, left parenthesis, n, right parenthesis, equals, 4, dot, 3, start superscript, n, end superscript, and Mustafa said the formula is g(n)=4\cdot4^{\large{n-1}}g(n)=4⋅4 n−1 g, left parenthesis, n, right parenthesis, equals, 4, dot, 4, start superscript, n, minus, 1, end superscript.