#MATLAB, 85 81

The function displays a plot on the screen.

function f(n,m)
hold all
axis equal
for k=1:gcd(m,n)
plot(i.^(4*(k:m:n^2)/n))
end

Result for n=30, m=12:

MATLAB, 85 81

The function displays a plot on the screen.

function f(n,m)
hold all
axis equal
for k=1:gcd(m,n)
plot(i.^(4*(k:m:n^2)/n))
end

Result for n=30, m=12:

#MATLAB, 85

The function displays a plot on the screen.

function f(n,m)
hold all
axis equal
for k=1:gcd(m,n)
plot(exp((k:m:n^2)*2i*pi/n))
end

Result for n=30, m=12:

#MATLAB, 85 81

The function displays a plot on the screen.

function f(n,m)
hold all
axis equal
for k=1:gcd(m,n)
plot(i.^(4*(k:m:n^2)/n))
end

Result for n=30, m=12:

#MATLAB, 85

The function displays a plot on the screen.

function f(n,m)
hold all
axis equal
for k=1:gcd(m,n)
plot(exp((k:m:n^2)*2i*pi/n))
end

#MATLAB, 85

The function displays a plot on the screen.

function f(n,m)
hold all
axis equal
for k=1:gcd(m,n)
plot(exp((k:m:n^2)*2i*pi/n))
end

Result for n=30, m=12: