QGIS/resources/function_help/json/generate_series

{
  "name": "generate_series",
  "type": "function",
  "description": "Creates an array containing a sequence of numbers.",
  "arguments": [
    {"arg":"start", "description":"first value of the sequence"},
    {"arg":"stop", "description":"value that ends the sequence once reached"},
    {"arg":"step","optional":true,"default":"1","description":"value used as the increment between values"}
  ],
  "examples": [ { "expression":"generate_series(1,5)", "returns":"array: 1, 2, 3, 4, 5"},
                { "expression":"generate_series(5,1,-1)", "returns":"array: 5, 4, 3, 2, 1"}
  ]
}