User:Toshio Yamaguchi

To do

• add {{Classes of natural numbers}} to pernicious number and add that number class to the template  Done
• add look-and-say sequence to {{Classes of natural numbers}}
• add Kolakoski sequence to {{Classes of natural numbers}}
• add Maris–McGwire–Sosa pair to {{Classes of natural numbers}}
• add Smith number to {{Classes of natural numbers}}
• add Sum-product number to {{Classes of natural numbers}}
• add Transposable integer to {{Classes of natural numbers}}
• add unitary perfect number to {{Classes of natural numbers}}

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