Solve T(n)=T(2n/3)+1 - which algorithm?

Analyze the solve t(n)=t(2n/3)+1 - which algorithm?.

Examples
Input: "test_input_1"
Output: "output_1"
Hints

Solve T(n)=T(2n/3)+1 - which algorithm?

Analyze the solve t(n)=t(2n/3)+1 - which algorithm?.