%I #11 Jun 12 2012 11:23:37

%S 1,3,15,85,255,21845,65535,1431655765,4294967295

%N Records in A212200.

%Y Cf. A212200, A212202, A212203, A212204, A051775.

%K nonn,more

%O 1,2

%A _N. J. A. Sloane_, May 03 2012

%E a(7)-a(9) from Alex Ryba, Jun 10 2012