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Number of elements in the n-th column of the second extension of the Mendeleyev-Seaborg periodic table of elements.
3

%I #5 Mar 30 2012 18:51:57

%S 7,6,2,2,2,2,2,2,2,2,2,2,2,2,2,2,4,4,4,4,4,4,4,4,4,4,6,6,6,6,6,7

%N Number of elements in the n-th column of the second extension of the Mendeleyev-Seaborg periodic table of elements.

%C A variant of A134982, with one term "4" changing place because (relative to the first table) the two elements number 21 and 39 are moved over to the next column of d-metals, placed above element 71.

%Y Cf. A137583, A093907, A134984, A135559.

%K nonn,easy,fini,full,less

%O 1,1

%A _Paul Curtz_, May 03 2008