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function fibonacci(n) {if (n <= 1) return n;return fibonacci(n - 1) + fibonacci(n - 2);}
console.log('Fibonacci sequence:');for (let i = 0; i <= 10; i++) {console.log(`F(${i}) = ${fibonacci(i)}`);}
const fibArrow = (n) => n <= 1 ? n : fibArrow(n - 1) + fibArrow(n - 2);const fibMemo = (() => {const cache = {};return function(n) {if (n in cache) return cache[n];if (n <= 1) return n;return cache[n] = fibMemo(n - 1) + fibMemo(n - 2);};})();

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