Squares of numbers, Sator-Rotas and the Sun and the Moon

Magic squares are squares that contain particular numbers arranged in equal rows and columns such that the sum of each row and column (and sometimes diagonal) are the same. The earliest known magic square appeared in China dating back to at least 650 B.C.E.(Lo Shu and the tortoise who could talk with a boy after the flood), but magic squares were represented also in Persia, India, Arabia and Europe.

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111, 333, 666, and many other curious digits. What are Demlo numbers?

The Earth map used in the UN flag: 33 sectors A grid, probably representing parallels and meridians, divides the Earth in 33 sectors. Another special number is 11, 33 being a multiple of it. You probably wonder what  it means and what relation have these numbers with the Earth. 33 appears immediately as a particular number, being a palindrome. Moreover 3×3=9;  33×3=99… another palindromic digit I like is the number 12321. If you sum all digits, you’ll obtain[…]

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