Dozenal Wiki

The  n-th house number is a figurate number made by a cube of side n+1, surmounted by a square pyramidal number with side n.

The first house numbers are: 1, 9, 28, 66, 12E, 1X7, 302, 464, 659...

No house numbers can have a Digital root of 2, 4, 6, or 8.

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