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0.5when given20. \$\endgroup\$lambda n:round(math.exp(-~n/16-2),2)saves 4 \$\endgroup\$nis an integer we can't use~; if we can assumenis an integer (in \$[1,122]\$) we can dolambda n:round(2.71828**((n-31)/16),2)for 38. \$\endgroup\$lambda n:round(1.06449445**(n-31),2)would work for 36. \$\endgroup\$