🧠 Before you code — what pattern fits?
The Tribonacci sequence: T0 = 0, T1 = 1, T2 = 1, and Tn+3 = Tn + Tn+1 + Tn+2. Given n, return the value of Tn.
n=4 → 4
n=25 → 1389537
🎬 Video explanation · NeetCodeIO
Your solution runs against 3 unit tests, including edge and large-value cases.
Loading...
Test console · 3 unit tests
Submit your code to run it against all 3 unit tests. Results appear here.
JavaScript, TypeScript & Python run sandboxed in your browser; other languages run on the execution server. Your code is saved locally as you type.