partición de números enteros en base tres-seis

pm+9 = (6+3)+(m+...(p)...+m)


pm+12 = (6+3+3)+(m+...(p)...+m)
pm+12 = (6+6)+(m+...(p)...+m)


pm+15 = (6+3+3+3)+(m+...(p)...+m)
pm+15 = (6+6+3)+(m+...(p)...+m)


pm+18 = (6+3+3+3+3)+(m+...(p)...+m)
pm+18 = (6+6+3+3)+(m+...(p)...+m)
pm+18 = (6+6+6)+(m+...(p)...+m)


P( pm+(6k) ) = ( (6k)/6 )
P( pm+(6k+3) ) = ( ((6k+3)+(-3))/6 )