Ely Cathedral The relief scenes were built into the wall, so each face or statue was individually hacked off, but leaving many finely carved details, and numerous puzzles as to what the original scenes showed. After the reformation it was redeployed as the Parish Church (Holy Trinity) for the town, a situation which continued up to 1938. The central octagonal tower, with its vast internal open space and its pinnacles and lantern above, forms the most distinctive and celebrated feature of the cathedral. However, what Pevsner describes as Ely's 'greatest individual achievement of architectural genius' came about through a disaster at the
Octagonal number pronic number. Octagonal numbers consistently alternate parity. Octagonal numbers are occasionally referred to as "star numbers," though that term is more commonly used to refer to centered dodecagonal numbers. Solving the formula for the "n"-th octagonal number, formula_2 for "n" gives An arbitrary number "x" can be checked for octagonality by putting it in this equation. If "n" is an integer, then "x" is the "n"-th octagonal number. If "n" is not an integer, then "x" is not octagonal. Octagonal number An octagonal number is a figurate number that represents an octagon. The octagonal number for "n" is given by