Template:Sequence of the Day for January 21

Intended for: January 21, 2013

Timetable

• First draft entered by Alonso del Arte on December 31, 2011 ✓
• Draft to be reviewed by November 21, 2012
• Draft to be approved by December 21, 2012

Yesterday's SOTD * Tomorrow's SOTD

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A007542: Successive integers produced by Conway’s PRIMEGAME.

{ 2, 15, 825, 725, 1925, 2275, 425, ... }

After the initial 2, each number that has an integer for a binary logarithm is also a prime number; that is to say powers of 2 with composite exponents (A073718) don’t show up in this sequence.