ALTER PROC spTriangular
@ValueIn int, 
@ValueOut int OUTPUT 
AS 
DECLARE @InWorking int;
DECLARE @OutWorking int;
IF  @ValueIn > 32
BEGIN
	THROW 50001, 'Overflow! Input value should not be greater than 32', 1;
	RETURN;
END
IF @ValueIn != 1
BEGIN 
        SELECT @InWorking = @ValueIn - 1;
        

        EXEC spTriangular @InWorking, @OutWorking OUTPUT;
        
        SELECT @ValueOut = @ValueIn + @OutWorking;
END 
ELSE 
BEGIN 
        SELECT @ValueOut = 1;
END 
RETURN;
GO