Sum prime

Here is an example: ${\color{#D61F06}{1}}, {\color{#3D99F6}{100}}, {\color{#D61F06}{3}}, {\color{#3D99F6}{98}}, \dots, {\color{#D61F06}{97}}, {\color{#3D99F6}{4}}, {\color{#D61F06}{99}}, {\color{#3D99F6}{2}}$ Now the sum of any two adjacent numbers is ether 101 or 103. The ${\color{#D61F06}{\text{red}}}$ numbers are the odd numbers in a increasing order and the ${\color{#3D99F6}{\text{blue}}}$ numbers are the even numbers in a decreasing order.