%I A101272
%S A101272 1,2,3,4,5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
%T A101272 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
%U A101272 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6
%N A101272 a(n)=n, n <=6; a(n)=6, n > 6.
%C A101272 Sequence of electron arrangements in the 2p 3p 4p and 5p atomic subshells.
%D A101272 A. Beiser, Concepts of Modern Physics, 2nd Ed., McGraw-Hill, 1973.
%D A101272 R. M. Tennent (Editor), Science Data Book, Oliver & Boyd, 1971.
%F A101272 a(n)=n, n <=6; a(n)=6, n > 6.
%F A101272 Euler transform of length 6 sequence [ 2, 0, 0, 0, 0, -1]. - Michael 
               Somos Aug 31 2006
%F A101272 G.f.: (1-x^6)/(1-x)^2. - Michael Somos Aug 31 2006
%e A101272 a(6)=6
%o A101272 (PARI) a(n)=max(0,min(6,n)) /* Michael Somos Aug 31 2006 */
%Y A101272 Cf. A040000.
%Y A101272 Sequence in context: A063283 A036055 A034151 this_sequence A006160 A071640 
               A102674
%Y A101272 Adjacent sequences: A101269 A101270 A101271 this_sequence A101273 A101274 
               A101275
%K A101272 easy,nonn
%O A101272 1,2
%A A101272 Jeremy Gardiner (jeremy.gardiner(AT)btinternet.com), Dec 19 2004