\[\boxed{\text{851\ (851).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[2 \cdot P_{2} = 4;\]
\[2 \cdot P_{2} = 4;\]
\[P_{3} = 6;\]
\[4 + 4 + 6 = 14\ чисел.\]
\[P_{3} = 6;\]
\[2 \cdot P_{2} = 4;\]
\[P_{3} = 6;\]
\[6 + 4 + 6 = 16\ чисел.\ \]