Just fun
Just one command and one slider
Sequence(Sequence(Circle((m, n), 0.5abs(sin(0.3sqrt(m² + n²) + a))), m, -10, 10), n, -10, 10)Sequence(Sequence(Circle((m, n), 0.5abs(sin(0.3sqrt(m² + n²) + a))), m, -10, 10), n, -10, 10)