To display the following pattern 1 121 123121 1234321 123454321 (Qbasic Code)

To display the following pattern
    1
    121
    123121
    1234321
    123454321

•  CLS
  a# = 1
  FOR i = 1 TO 5
      PRINT a# ^ 2
      a# = (a# * 10) + 1
  NEXT i
  END

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