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A138228 18 upper atomic numbers of Mendeleyev-Seaborg 90 elements periodic table A138724. +0
1
1, 4, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 5, 6, 7, 8, 9, 2 (list; graph; listen)
OFFSET

0,2

FORMULA

Each element gives its name to the 18 groups:(hydrogen)H,Be,Sc,Ti,V,Cr,Mn,Fe,Co,Ni,Cu,Zn,B,C,N,O,F,He.

CROSSREFS

Cf. A138718. Analoguous to first 32 terms of A135559.

Sequence in context: A128452 A144292 A076943 this_sequence A133784 A041821 A042429

Adjacent sequences: A138225 A138226 A138227 this_sequence A138229 A138230 A138231

KEYWORD

nonn,uned

AUTHOR

Paul Curtz (bpcrtz(AT)free.fr), May 05 2008

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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