Erlang/OTP 22 (on my machine™, of course) runs it in 9.3 seconds when invoked from the compiled module, and in at least in 5 minutes when invoked as a fun defin

Erlang/OTP 22 (on my machine™, of course) runs it in 9.3 seconds when invoked from the compiled module, and in at least in 5 minutes when invoked as a fun defined in the shell: "at least" because I did not have enough patience to wait until it actually completes.