%I #3 Mar 30 2012 18:41:15

%S 127,126,128,130,132,134,136,137,139,141,142,144,145,147,149,151,153,

%T 155,157,159,161,163

%N Number of neutrons in longest known radioactive decay series ending with Lead 209, reversed.

%C See comments in A080532. Protons are in A080536.

%H C. Heilman, <a href="http://chemlab.pc.maricopa.edu/periodic/periodic.html">The Pictorial Periodic Table</a>

%F a(n)=A080532(n)-A080536(n).

%Y Cf. A080537, A080538, A080539.

%K nonn,hard

%O 0,1

%A _Ralf Stephan_, Feb 20 2003