|
%I #9 Jan 22 2014 17:58:32
%S 2,2,6,2,6,10,2,6,10,14,2,6,10,14,18,2,6,10,14,18,22,2,6,10,14,18,22,
%T 26,2,6,10,14,18,22,26,30,2,6,10,14,18,22,26,30,34,2,6,10,14,18,22,26,
%U 30,34,38
%N Triangle T(n,k) = 2+4k read by rows.
%H Wikipedia, <a href="http://en.wikipedia.org/wiki/Electron_shell">Electron shell</a>
%F T(n,k) = A016825(k).
%F T(n,k) = 2*A158405(n+1,k).
%e 2;
%e 2, 6;
%e 2, 6, 10;
%e 2, 6, 10, 14;
%e 2, 6, 10, 14, 18;
%e 2, 6, 10, 14, 18, 22;
%e 2, 6, 10, 14, 18, 22, 26;
%Y Cf. A001105 (row sums), A167268.
%K nonn,easy,tabl
%O 0,1
%A _Paul Curtz_, Mar 06 2010
|
