cp's OEIS Frontend

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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A138469 Atomic numbers of p-block elements.

Original entry on oeis.org

5, 6, 7, 8, 9, 10, 13, 14, 15, 16, 17, 18, 31, 32, 33, 34, 35, 36, 49, 50, 51, 52, 53, 54, 81, 82, 83, 84, 85, 86, 113, 114, 115, 116, 117, 118
Offset: 1

Views

Author

Paul Curtz, May 09 2008

Keywords

Comments

6 X 6 square of orbital p filling elements in Mendeleyev-Seaborg or Janet-Tarantola periodic table.
The sequence is considered full if we assume that all elements with 8 shells or more, i.e. of periods 8 and higher in Mendeleev's periodic table, have extremely unstable nuclei (extremely short half-life.)
The atomic numbers of elements in each block are
s-block: 1,2, 3,4, 11,12, 19,20, 37,38, 55,56, 87,88 for Mendeleev's periodic table (Cf. A160914)
s-block: 1,2, 3,4, 11,12, 19,20, 37,38, 55,56, 87,88, 119,120 for Janet's periodic table (Cf. A160914)
p-block: 5..10, 13..18, 31..36, 49..54, 81..86, 113..118 (Cf. A138469)
d-block: 21..30, 39..48, 71..80, 103..112 (Cf. A199934)
f-block: 57..70, 89..102 (Cf. A217923)

Links

Crossrefs

Cf. A130517, A131603, A167268.
Cf. A160914 Atomic numbers of s-block elements.
Cf. A138469 Atomic numbers of p-block elements.
Cf. A199934 Atomic numbers of d-block elements.
Cf. A217923 Atomic numbers of f-block elements.

Extensions

Edited by Daniel Forgues, May 15 2011
Ref. to A160914 and A199934 inserted by Jean-François Alcover, Oct 15 2012

A111313 Character codes of the string "The On-Line Encyclopedia of Integer Sequences".

Original entry on oeis.org

84, 104, 101, 32, 79, 110, 45, 76, 105, 110, 101, 32, 69, 110, 99, 121, 99, 108, 111, 112, 101, 100, 105, 97, 32, 111, 102, 32, 73, 110, 116, 101, 103, 101, 114, 32, 83, 101, 113, 117, 101, 110, 99, 101, 115
Offset: 1

Views

Author

Zak Seidov, Nov 03 2005

Keywords

Crossrefs

Cf. A130764, A130765, A117845, A134456, A131603. - M. F. Hasler, Nov 08 2009

Programs

  • Mathematica
    ToCharacterCode["The On-Line Encyclopedia of Integer Sequences"]
  • PARI
    A111313=Vecsmall("The On-Line Encyclopedia of Integer Sequences") \\ M. F. Hasler, Nov 08 2009
  • Python
    print([ord(c) for c in "The On-Line Encyclopedia of Integer Sequences"]) # Michael S. Branicky, Aug 17 2022
Showing 1-2 of 2 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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