Ely Cathedral bishop, the Bishop of Huntingdon. Architecturally it is outstanding both for its scale and stylistic details. Having been built in a monumental Romanesque style, the galilee porch, lady chapel and choir were rebuilt in an exuberant Decorated Gothic. Its most notable feature is the central octagonal tower, with lantern above, which provides a unique internal space and, along with the West Tower, dominates the surrounding landscape. Ely Cathedral is a major tourist destination, receiving around 250,000 visitors per year, and sustains a daily pattern of morning and evening services. Ely Abbey was founded in 672, by Æthelthryth (St Etheldreda), daughter
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