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A138096
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Number of elements in the n-th column of the second extension of the Mendeleyev-Seaborg periodic table of elements.
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3
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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
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| 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.
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CROSSREFS
| Cf. A137583, A093907, A134984, A135559.
Sequence in context: A100082 A152861 A198925 * A011102 A068469 A181152
Adjacent sequences: A138093 A138094 A138095 * A138097 A138098 A138099
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KEYWORD
| nonn,easy,fini,full,less
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AUTHOR
| Paul Curtz (bpcrtz(AT)free.fr), May 03 2008
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