See THIS LINK
In Brighton itself, there is a plaque on the house at the southwest corner of Sussex Square stating that Charles Dodgson (Lewis Carroll) stayed here frequently between 1874 and 1887.
See THIS LINK and THIS LINK
The distinctive shiny black bricks used in Patcham Place and the Royal Crescent, Brighton, are called 'mathematical tiles', but I don't know why, and no one else seems to know either. They also occur in Lewes.
To see an Ordnance Survey map click at THIS LINK
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An extract from The Mathematical Gazetteer of the British Isles created by David Singmaster
The original site is at THIS LINK