A137583 Number of elements in the n-th period of the Janet periodic table of elements.

2, 2, 8, 8, 18, 18, 32, 32

Offset: 1

Author

Paul Curtz, Apr 26 2008

Keywords

• nonn
• less
• fini
• full

Comments

Essentially 2 followed by the first terms of A093907.

This puts Hydrogen and Helium in the first row, Lithium and Beryllium into the second, Boron to Magnesium into the third etc.

Links

• Mark R. Leach, The Internet Database of Periodic Tables, Chemogenesis web book.
• Albert Tarantola, PSE of Elements (Janet form).
• Mark J. Winter, Image of the Janet long format (or 32-column) periodic table, Web Elements Chemistry Nexus.

Crossrefs

Cf. A093907, A137508, A138509, A137575.

Programs

Mathematica

Flatten@ Table[2 (n #)^2 & /@ {-1, 1}, {n, 4}] (* Michael De Vlieger, Jul 22 2016 *)

Extensions

Edited by R. J. Mathar, Oct 02 2009