Code:
import java.lang.reflect.*;
import java.lang.annotation.*;

@Target({ElementType.TYPE_PARAMETER, ElementType.METHOD})
@Repeatable(TC.class)
@interface T { int value(); }

@Target(ElementType.METHOD)
@interface TC { T[] value(); }

public class RepAnno {

    public class C<@T(1) @T(2) N> {}

}

Could be compiled without any errors. Note, that TC (container annotation) has target = METHOD.

JLS declares (9.7.5. Multiple Annotations of the Same Type):
"If a declaration context or type context has multiple annotations of a repeatable annotation type T, then it is as if the context has no explicitly declared annotations of type T and one implicitly declared annotation of the containing annotation type of T."

Let's check it with reflection API and extend the code:

import java.lang.reflect.*;
import java.lang.annotation.*;

@Target({ElementType.TYPE_PARAMETER, ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Repeatable(TC.class)
@interface T { int value(); }

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@interface TC { T[] value(); }

public class RepAnno {

    public class C1<@T(1) N> {}
    public class C2<@T(1) @T(2) N> {}

    public static void main(String[] args) {

        Class<RepAnno> cl = RepAnno.class;
        Class<?>[] cs = cl.getDeclaredClasses();

        for (Class<?> c : cs) {
            System.out.println("Class: " + c);
            TypeVariable<?>[] tvs = c.getTypeParameters();
            for (TypeVariable<?> tv : tvs) {
                System.out.println(" T: " + tv.isAnnotationPresent(T.class));
                System.out.println(" TC: " + tv.isAnnotationPresent(TC.class));
            }
        }
    }
}

It's output is:

$ java RepAnno
Class: class RepAnno$C2
    T: false
    TC: true
Class: class RepAnno$C1
    T: true
    TC: false

I.e. TC is applied to type parameter of class C2, although TC target (METHOD) should not be applicable to type parameter. Should be an error instead.