Question

Find the first, fourth, and eighth terms of the sequence. A(n)=-2*2^(x-1)

Answer 1

$\bf \begin{array}{ccll} n&term&value\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 1&A(1)&-2(2)^{1-1}\\ &&-2(2)^0\\ &&-2\\\\ 4&A(4)&-2(2)^{4-1}\\ &&-2(2)^3\\ &&-16\\\\ 8&A(8)&-2(2)^{8-1}\\ &&-2(2)^7\\ &&-256 \end{array}$