May be. Each value in the series is, in binary, all 1s with the quantity of digits equal to the previous value in the series. Someone took a stab at this theory

May be. Each value in the series is, in binary, all 1s with the quantity of digits equal to the previous value in the series. Someone took a stab at this theory: http://www.mail-archive.com/mersenne@base.com/msg06260.html http://www.mail-archive.com/mersenne@base.com/msg06260.html