Create a list of numbers (1, 2, 3…) with one formula that spills.
Copy this formula
=SEQUENCE(10)SEQUENCE(rows, [cols], [start], [step]) spills a series of numbers. SEQUENCE(10) gives 1–10 down a column; add arguments to set the start and step. It replaces dragging a fill handle.
=SEQUENCE(5, 1, 0, 10)→0,10,20,30,40Five numbers starting at 0, stepping by 10.
Legacy (ROW)
=ROW()-1Fill down to number rows in older Excel.
Type 1 and 2, select both, and drag the fill handle; or use =ROW()-offset as a formula.
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