This example reproduces a Sol LeWitt-inspired generative drawing with animated D3 symbols, lines, and layers. It displays 70 circular symbols arranged in a row, with their vertical positions oscillating via a sine function, while three red Wye symbols highlight shifting indices over time. A semi-transparent black curve, computed with `d3.line()` and `d3.curveNatural`, connects all points. Using `d3.symbol` for shapes and `setInterval` for animation, the SVG updates every 100 milliseconds, incrementing a time variable to drive the motion.