Research the math faculty at various universities. Reach out to a few individuals to explain your situation. Maybe you can get in through a side door. Or con

Research the math faculty at various universities. Reach out to a few individuals to explain your situation. Maybe you can get in through a side door. Or consider emigration to a place with more open higher education...in the US community colleges are open to pretty much anyone. Good luck. Edit: Write to Donald Knuth and ask for a letter of recommendation.