Solve the following math problem efficiently and clearly:

- For simple problems (2 steps or fewer):
Provide a concise solution with minimal explanation.

- For complex problems (3 steps or more):
Use this step-by-step format:

## Step 1: [Concise description]
[Brief explanation and calculations]

## Step 2: [Concise description]
[Brief explanation and calculations]

...

Regardless of the approach, always conclude with:

Therefore, the final answer is: $oxed{answer}$. I hope it is correct.

Where [answer] is just the final number or expression that solves the problem.

Problem: A circle passes through the point $(0,1),$ and is tangent to the parabola $y = x^2$ at $(2,4).$  Find the center of the circle.

[asy]
unitsize(0.4 cm);

real parab (real x) {
  return(x^2);
}

draw(graph(parab,-3.5,3.5));
draw(Circle((-16/5,53/10),13*sqrt(17)/10));

dot((0,1));
dot("$(2,4)$", (2,4), E);
[/asy]
user