Quarterly report pursuant to Section 13 or 15(d)

Note 8 - Derivative Liabilities (Details Textual)

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Note 8 - Derivative Liabilities (Details Textual) - USD ($)
 3 Months Ended 6 Months Ended
Mar. 10, 2023
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2023
Mar. 31, 2022
Sep. 30, 2022
May 12, 2019
Jun. 28, 2018
Jun. 22, 2017
Feb. 20, 2017
Common Stock, Par or Stated Value Per Share (in dollars per share) $ 0.001 $ 0.001   $ 0.001   $ 0.001        
Gain (Loss) on Sale of Derivatives   $ 1,158,197 $ 0 $ 1,158,197 $ 0          
Extinguishment of Derivative Liabilities for Warrants [Member]                    
Stockholders' Equity, Period Increase (Decrease)   $ 49,278                
Derivative Warrant Liability [Member]                    
Derivative Liability, Total             $ 1,628,113      
Fair Value Adjustment of Derivatives       $ 0 $ 1,000,000          
Series F Warrant [Member]                    
Class of Warrants and Rights, Required Cash Purchase Price (in dollars per share)                 $ 36.00  
Class of Warrant or Right, Exercise Price of Warrants or Rights                   $ 150.00
Series G Warrant [Member]                    
Class of Warrants and Rights, Required Cash Purchase Price (in dollars per share)               $ 22.00    
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 140.00                  
Class of Warrant or Right, Exercised 34,013                  
Stock Issued During Period, Shares, Warrants Exercised 3,402                  
Series H Warrant [Member]                    
Class of Warrants and Rights, Required Cash Purchase Price (in dollars per share)             $ 10.66      
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 80.00                  
Class of Warrant or Right, Exercised 43,077                  
Stock Issued During Period, Shares, Warrants Exercised 8,617