API reference › @evolu/common › Number › FibonacciIndex

const FibonacciIndex: brand(
  "FibonacciIndex",
  /*#__PURE__*/ lessThanOrEqualTo(78)(PositiveInt),
);

Defined in: packages/common/src/Number.ts:106

Valid index for fibonacciAt, constrained to 1-78.

Limited to 78 because F(79) exceeds JavaScript's MAX_SAFE_INTEGER.