I revert back to my grade school days from time to time to a round'(?) song we sang - Inch worm, Inch worm measuring the marigolds, dah da da da....(can't remember all the words) then the next round goes, 1 and 1 are 2, 2 and 2 are 4, 4 and 4 are 8, 8 and 8 are 16, 16 and 16 are 32.
Have no idea why that gets in my head.