A080537 - OEIS

%I #2 Mar 30 2012 18:41:15

%S 124,125,126,128,129,131,132,134,136,138,140,142,144,146,145,147,149,

%T 151,153,155,157

%N Number of neutrons in longest known radioactive decay series ending with Lead 206 ("uranium series"), reversed.

%C See comments in A080529, protons are in A080533.

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

%F a(n)=A080529(n)-A080533(n).

%Y Cf. A080538, A080539, A080540.

%K nonn,hard

%O 0,1

%A _Ralf Stephan_, Feb 20 2003