Don't even think of counting manually

Algebra Level 3

$\color{#BA33D6}{1 \\ 3 \quad 5 \\ 7 \quad 9 \quad 11 \\ 13 \quad 15 \quad 17 \quad 19 \\ 21 \quad 23 \quad 25 \quad 27 \quad 29 \\ ........................... \\..............................}$ **Find the sum of numbers in the 123rd row.

Don't even think of counting manually

You can try my other Sequences And Series problems by clicking here : Part II and here : Part I..