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  • \$\begingroup\$ t isn't initialised so this won't over multiple runs. Copy and paste your single line of calling f and the second time f is run is incorrect. \$\endgroup\$ Commented Sep 16, 2021 at 0:13
  • 1
    \$\begingroup\$ @Noodle9 it is fixed. \$\endgroup\$ Commented Sep 16, 2021 at 0:45
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    \$\begingroup\$ Suggest n/i instead of i<=n \$\endgroup\$ Commented Sep 25, 2021 at 19:02