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 Octagonal number An octagonal number is a figurate number that represents an octagon. The octagonal number for "n" is given by the formula 3"n" - 2"n", with "n" > 0. The first few octagonal numbers are: 1, 8, 21, 40, 65, 96, 133, 176, 225, 280, 341, 408, 481, 560, 645, 736, 833, 936 Octagonal numbers can be formed by placing triangular numbers on the four sides of a square. To put it algebraically, the "n"-th octagonal number is The octagonal number for "n" can also be calculated by adding the square of "n" to twice the ("n - 1")th