The following table shows the numbers of polyominoes of various types with n cells.

A higher-dimension figure containing n cells.

An N battery (or N cell) is a standard size of dry cell battery.

Each row and column intersects N regions and shares N cells with each.

The MClone algorithm, essentially, works as follows: given the 3D model of the object which we want to create a new pattern, we first randomly place n cells on the model's surface.

Like sudoku, the solver must fill the remaining white cells with numbers 1 to 9 (or 1 to n in puzzles with N cells per side) such that each row and column contains unique digits.

NxN row-column grid partitioned into N regions, where each of the N rows, columns and regions have N cells and each of the N digits occur once in each row, column or region.

A magic hexagon of order n is an arrangement of numbers in a centered hexagonal pattern with n cells on each edge, in such a way that the numbers in each row, in all three directions, sum to the same magic constant.

Distinct N and E cell forms exist (also Na and A cells in British nomenclature - noradrenaline and adrenaline); the former produce norepinephrine, the latter arise out of N cells through interaction with glucocorticoids, and convert norepinephrine into epinephrine.