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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A138052 Atomic number of the penultimate transition metal (group 11) in the n-th row of the periodic system of elements.

Original entry on oeis.org

29, 47, 79, 111
Offset: 4

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Author

Paul Curtz, May 02 2008

Keywords

Comments

This refers to Cu=29, Ar=47, Au=79, and Rg=111.
The first differences are 18, 18, 32, indicating that there is a row of Lanthanides between Au and Rg.

Links

Crossrefs

Cf. A134984, A138724, A137575, A137846, A138040.

Extensions

Edited by R. J. Mathar, May 21 2009
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