Nice primes: Difference between revisions

: {{math|dr_''10''(<var>n</var>) &#61; 0 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if <var>n</var> &#61; 0,}}

: {{math|dr_''10''(<var>n</var>) &#61; 1 + ((<var>n</var> - 1) mod 9) &nbsp; &nbsp; if <var>n</var> &#8800; 0.}}